Reeflings

Invertebrates

851 species

Invertebrates are a diverse group of animals without backbones that play various roles in a reef aquarium. They include cleaners like shrimps and crabs, sand sifters like sea cucumbers, and fascinating creatures like cephalopods and anemones. Many invertebrates form symbiotic relationships with other tank inhabitants, such as clownfish with anemones. They can help maintain tank cleanliness by consuming detritus, algae, and uneaten food. However, some may require specialized care, diets, or tank conditions. For example, cephalopods often need large tanks with secure lids due to their intelligence and escape tendencies, while tridacna clams require intense lighting to support their symbiotic zooxanthellae. It's important to research each species' needs and compatibility with tank mates before adding them to your aquarium.

  1. Yellow boring sponge (Cliona celata) being cleaned by sea cucumber Stichopus mollis.
    Common name: Boring Sponge
    Scientific name: Aaptos suberitoides
  2. Algae octopus camouglages perfectly with its surrounding on coral reef - Abdopus aculeatus
    Common name: algae octopus
    Scientific name: Abdopus aculeatus
  3. Crown of Thorns Starfish (Purple Variant)
    Common name: Crown Of Thorns Sea Star
    Scientific name: Acanthaster planci
  4. Common name: Orange lumpy sponge
    Scientific name: Acanthella acuta
  5. Corals and fish in the tropical ocean, underwater seascape.  Colorful healthy tropical reef with sponge and swimming fish. Vivid photo from scuba diving with the marine life.
    Common name: Sponge Coral
    Scientific name: Acanthella cavernosa
  6. Vibrant east mediterranean reef nudibranch sea slug Sea anemone sponge
    Common name: Sponge Nudibranch
    Scientific name: Acanthella klethra
  7. Common name: Vaillant's chiton
    Scientific name: Acanthopleura vaillantii
  8. Orangutan crab (Achaeus japonicus), is a crab of the family Inachidae (spider crabs or decorator crabs) at the Derawan Islands, Indonesia.  Underwater Photography and marine life.
    Common name: Orangutang crab
    Scientific name: Achaeus japonicus
  9. Closeup shot of a beadlet anemone (Actinia equina) underwater
    Common name: Beadlet anemone
    Scientific name: Actinia equina
  10. White-spotted Rose Anemone
    Common name: Strawberry anemone
    Scientific name: Actinia fragacea
  11. Closed sea urchin - Actinia tenebrosa, attached to a rock
    Common name: Waratah anemone
    Scientific name: Actinia tenebrosa
  12. Mossy old tree and windflower in forest
    Common name: tree anemone
    Scientific name: Actinodendron arboreum
  13. blossom in spring
    Common name: Branching anemone
    Scientific name: Actinodendron glomeratum
  14. blossom in spring
    Common name: Branching anemone
    Scientific name: Actinodendron plumosum
  15. Common name: Bannwarth's Sea Cucumber
    Scientific name: Actinopyga bannwarthi
  16. Fresh raw lobsters and various seafood on ice, decorated with vegetables
    Common name: Spiny Sea Cucumber
    Scientific name: Actinopyga crassa
  17. Actinopyga Mauritiana - Sea Cucumber
    Common name: Brownfish
    Scientific name: Actinopyga echinites
  18. Red holothurian underwater
    Common name: stone fish (holothurian)
    Scientific name: Actinopyga lecanora
  19. Actinopyga Mauritiana - Sea Cucumber
    Common name: Surf redfish
    Scientific name: Actinopyga mauritiana
  20. Full plate of cooked prawns, with plump and fresh pink-orange shells, garnished with fresh cucumbers, tasty and nutritious seafood dish, excellent source of high-quality protein and healthy nutrients
    Common name: Plump sea cucumber
    Scientific name: Actinopyga obesa
  21. Branching Hammer Coral ( reef coral).
It is common in the Pacific Ocean, reaching as far north as Japan.
    Common name: Branching Hammer Coral
    Scientific name: Adreus fascicularis
  22. A banana nudibranch (Aegires minor) is slowly crawling across the seabed, Raja Ampat, Indonesia, Asia
    Common name: A nudibranch
    Scientific name: Aegires minor
  23. Gray Norse God Nudibranch, Aegires serenae
    Common name: Green and black gill guard slug
    Scientific name: Aegires serenae
  24. Caribbean coral reef
    Common name: orange elephant ear sponge
    Scientific name: Agelas clathrodes
  25. Agelas conifera, brown tube sponge
    Common name: Brown Tube Sponge
    Scientific name: Agelas conifera
  26. Tube of petrified sponge in orange Sandstone with interlayers
    Common name: Rough Tube Sponge
    Scientific name: Agelas dispar
  27. Cleaning the dirty electric fan,top view
    Common name: Fan Sponge
    Scientific name: Agelas flabelliformis
  28. Water slug
    Common name: Slimy Branching Sponge
    Scientific name: Agelas gracilis
  29. Common name: Mauritian Sponge
    Scientific name: Agelas mauritiana
  30. Oranger Demosponge (Agelas oroides), Corfu, Greece, Europe
    Common name: Gold Sponge
    Scientific name: Agelas oroides
  31. Orange Elephant Ear Sponge (Agelas Clathrodes)
    Common name: Elephant Ear Sponge
    Scientific name: Agelas schmidtii
  32. Aiolochroia crassa,Benching tube sponge
    Common name: Branching tube sponge
    Scientific name: Aiolochroia crassa
  33. Small glass anemone pest in reef aquarium tank - Exaiptasia or Aiptasia Pallida
    Common name: Trumpet anemone
    Scientific name: Aiptasia mutabilis
  34. Small glass anemone pest in reef aquarium tank - Exaiptasia or Aiptasia Pallida
    Common name: pale anemone
    Scientific name: Aiptasia pallida
  35. Common name: Aldisa barlettai
    Scientific name: Aldisa barlettai
  36. King ragworms from close
    Common name: Clam Worm
    Scientific name: Alitta virens
  37. Squat lobsters and whip coral goby
    Common name: Elegant squat lobster
    Scientific name: Allogalathea elegans
  38. Red snapping shrimp (Alpheus armatus) hiding in a corkscrew anemone in the Caribbean, Roatan, Bay Islands, Honduras
    Common name: brown snapping shrimp
    Scientific name: Alpheus armatus
  39. Postage stamp.  Alpheus bellulus.
    Common name: Beautiful goby shrimp
    Scientific name: Alpheus bellulus
  40. Red snapping shrimp (Alpheus armatus) hiding in a corkscrew anemone in the Caribbean, Roatan, Bay Islands, Honduras
    Common name: red snapping shrimp
    Scientific name: Alpheus bisincisus
  41. Gold-streaked prawn-goby and  Djeddah snapping shrimp
    Common name: Djeddah snapping shrimp
    Scientific name: Alpheus djeddensis
  42. Common name: Immaculate Pistol Shrimp
    Scientific name: Alpheus immaculatus
  43. Common name: fine-striped snapping shrimp
    Scientific name: Alpheus ochrostriatus
  44. Common name: Pacific Pistol Shrimp
    Scientific name: Alpheus pacificus
  45. Flagtail Shrimpgoby (Amblyeleotris yanoi) live together with Randall's snapping shrimp (Alpheus randalli). Underwater symbiosis. Tulamben, Bali, Indonesia.
    Common name: Randall's Pistol Shrimp
    Scientific name: Alpheus randalli
  46. Common name: Red-spotted Pistol Shrimp
    Scientific name: Alpheus rubromaculatus
  47. Common name: Twin Snapping Shrimp
    Scientific name: Alpheus soror
  48. Common name: carrot-sponge
    Scientific name: Amphilectus fucorum
  49. Erect rope sponge and Cushion starfish underwater
    Common name: erect rope sponge
    Scientific name: Amphimedon compressa
  50. Coconut Octopus - Amphioctopus marginatus hunts at night. Sea life of Tulamben, Bali, Indonesia.
    Common name: Veined octopus
    Scientific name: Amphioctopus marginatus
  51. The amazing and mysterious underwater world of Indonesia, North Sulawesi, Manado, brittlestar
    Common name: brittlestar
    Scientific name: Amphiura filiformis
  52. Holthuis Cleaner Shrimp, Ancylomenes holthuisi at a Puerto Galera tropical coral reef in the Philippines. This transparent shrimp is hiding among the tentacles of a beautiful sea anemone
    Common name: Holthuis' Shrimp
    Scientific name: Ancylomenes holthuisi
  53. Sarasvati Anemone Shrimp Ancylomenes sarasvati
    Common name: Sarasvati Anemone Shrimp
    Scientific name: Ancylomenes sarasvati
  54. Common name: Manjano Anemone
    Scientific name: Anemonia manjano
  55. Mediterranean Sea Anemone (Snakelocks Anemone, Anemonia Viridis), Kornati Archipelago, Adriatic Sea, Croatia
    Common name: Snakelocks anemone
    Scientific name: Anemonia viridis
  56. Mediterranean feather star water lilly - Antedon mediterranea on sea bed
    Common name: Feather star
    Scientific name: Antedon mediterranea
  57. Anemone Mandala 03
    Common name: giant green anemone
    Scientific name: Anthopleura xanthogrammica
  58. Common name: Aperiovula juanjosensii
    Scientific name: Aperiovula juanjosensii
  59. Spouting Horn - Oregon Coast
    Common name: Crater Sea Squirt
    Scientific name: Aplidium crateriferum
  60. Common name: Tabasco Tunicate
    Scientific name: Aplidium tabascum
  61. A wild California Sea Hare, Aplysia californica, a hermaphroditic species commonly used in laboratory research
    Common name: California seahare
    Scientific name: Aplysia californica
  62. pesci
    Common name: depilatory sea hare
    Scientific name: Aplysia depilans
  63. Aplysia fasciata
    Common name: mottled sea hare
    Scientific name: Aplysia fasciata
  64. Dotted sea-hare (Aplysia punctata) in Mediterranean Sea
    Common name: spotted sea hare
    Scientific name: Aplysia punctata
  65. Yellow tube sea sponge - Aplysina aerophoba, underwater image into the Mediterranean sea
    Common name: Yellow tube sponge
    Scientific name: Aplysina aerophoba
  66. Caribbean coral garden
    Common name: Stove Pipe Sponge
    Scientific name: Aplysina archeri
  67. Coral reef Row Pore Rope Sponge (Aplysina cauliformis)
    Common name: row pore rope sponge
    Scientific name: Aplysina cauliformis
  68. Yellow-cave sponge (Aplysina cavernicola) in Mediterranean Sea
    Common name: Vase Sponge
    Scientific name: Aplysina cavernicola
  69. Yellow tube sea sponge - Aplysina aerophoba, underwater image into the Mediterranean sea
    Common name: Yellow tube sponge
    Scientific name: Aplysina fistularis
  70. Underwater coral reef
    Common name: Stove Pipe Sponge
    Scientific name: Aplysina lacunosa
  71. A Pickle of Sea Cucumbers
    Common name: California Sea Cucumber
    Scientific name: Apostichopus californicus
  72. Tropical sea cucumber (Pearsothuria graeffei)
    Common name: Warty sea cucumber
    Scientific name: Apostichopus parvimensis
  73. Common name: Burton's Starfish
    Scientific name: Aquilonastra burtoni
  74. Sand Sifting Sea Star - (Astropecten polycanthus)
    Common name: Sand Sifting Starfish
    Scientific name: Archaster angulatus
  75. sand sifting starfish (archaster typicus) moving through the glass of a reef aquarium
    Common name: Indo-Pacific Beach Star
    Scientific name: Archaster typicus
  76. Portrait of a regal slipper lobster (Arctides regalis) also called shovel-nosed lobster; Hawaii, United States of America
    Common name: Regal Slipper lobster
    Scientific name: Arctides regalis
  77. Ardeadoris Nudibranch
    Common name: Ardeadoris egretta
    Scientific name: Ardeadoris egretta
  78. Fula negra or Damisela Canaria  fish ( Abudefduf luridus ) in the sea
    Common name: Canary Damsel
    Scientific name: Arthuria canariensis
  79. Dirty Sea-squirt or European Sea Squirt (Ascidiella aspersa), Norwegian Sea, Northern Atlantic, Norway, Europe
    Common name: dirty sea-squirt
    Scientific name: Ascidiella aspersa
  80. Many Northern Pacific Seastars or Japanese Common Starfish (Asterias amurensis), Sea of Japan, Primorsky Krai, Russian Federation
    Common name: Japanese common starfish
    Scientific name: Asterias amurensis
  81. étoile de mer commune (Asterias rubens).
    Common name: Northern Sea Star
    Scientific name: Asterias rubens
  82. Orange starfish on the sea-bed
    Common name: Asterina Starfish
    Scientific name: Asterina anomala
  83. Clumpy Nudibranch,Asteronotus cespitosus, Kona Hawaii.
    Common name: Nudibranch
    Scientific name: Asteronotus cespitosus
  84. Common name: sheriff-badge sea star
    Scientific name: Asteropsis carinifera
  85. Magnificent fire urchin (Asthenosoma ijimai) near Anilao, Batangas, Luzon, Philippines.  Underwater photography and travel.
    Common name: Fire Urchin
    Scientific name: Asthenosoma ijimai
  86. Coleman Shrimp, Periclimenes colemani, Sea Urchin, Variable Fire Urchin, Asthenosoma varium, Coral Reef, Lembeh, North Sulawesi, Indonesia, Asia
    Common name: variable fire urchin
    Scientific name: Asthenosoma varium
  87. Common name: Anderson's Sand Star
    Scientific name: Astropecten andersoni
  88. Orange Comb Starfish under water - Astropecten sp.
    Common name: Royal Starfish
    Scientific name: Astropecten aranciacus
  89. Giovane esemplare di stella marina, Astropecten bispinosus, tra la sabbia
    Common name: Bispinosus Sand Star
    Scientific name: Astropecten bispinosus
  90. Sand Sifting Sea Star - (Astropecten polycanthus)
    Common name: Sand Sifting Starfish
    Scientific name: Astropecten jonstoni
  91. Astropecten spiny sea star on silty bottom
    Common name: comb star
    Scientific name: Astropecten polyacanthus
  92. A giant basket star, Astrophyton muricatum, underwater marine life, Caribbean sea, Mexico
    Common name: Giant Basket Star
    Scientific name: Astrophyton muricatum
  93. Magnificent Urchin Astropyga magnifica
    Common name: Pale spine fire urchin
    Scientific name: Astropyga magnifica
  94. Venomous sea urchin, Astropyga radiata, Bali Indonesia.
    Common name: Blue-spotted urchin
    Scientific name: Astropyga radiata
  95. Columbus Day. Accessories for sailors on a dark background
    Common name: flag pen shell
    Scientific name: Atrina vexillum
  96. Colony of tunicates (Atriolum robustum), Maldives
    Common name: Robust sea squirt
    Scientific name: Atriolum robustum
  97. Moon jellyfish (Aurelia aurita) in an aquarium. .
    Common name: moon jelly
    Scientific name: Aurelia aurita
  98. Trepang also known as Brown Sea Cucumber or beche-de-mer from Belitung Island for Chinese New Year food tradition in Indonesia
    Common name: New zealand sea cucumber
    Scientific name: Australostichopus mollis
  99. Common name: Aru Sponge
    Scientific name: Axinella aruensis
  100. Sponge, axinella cannabina, Kas Turkey
    Common name: Axinella cannabina
    Scientific name: Axinella cannabina
  101. axinelle plate
    Common name: yellow sponge
    Scientific name: Axinella damicornis
  102. Callyspongia aculeata, commonly known as the branching vase sponge
    Common name: branching sponge
    Scientific name: Axinella dissimilis
  103. Hand of an anonymous woman with foam and a yellow sponge
    Common name: Yellow Sponge
    Scientific name: Axinella flustra
  104. Axinella polypoides 847_190 R, Esponja amarilla, esponja.
    Common name: Axinella Polypoides
    Scientific name: Axinella polypoides
  105. Black soft foam board background. black sponge surface texture.
    Common name: Rough Sponge
    Scientific name: Axinella verrucosa
  106. Common name: Axinyssa ambrosia
    Scientific name: Axinyssa ambrosia
  107. Pederson Cleaner Shrimp (Periclimenes pedersoni) in Corkscrew Anomones (Bartholomea annulata)
    Common name: corkscrew anemone
    Scientific name: Bartholomea annulata
  108. Common name: Curlycue Anemone
    Scientific name: Bartholomea lucida
  109. Close-up of a beautiful mediterranean nudibranch or anemone seaslug (Berghia coerulescens)
    Common name: Berghia Nudibranch
    Scientific name: Berghia stephanieae
  110. a colorful nudibranch crawling on the coral. Science name: 
Berthella martensi (Pilsbry, 1896).  Ie Island, Okinawa, Japan
    Common name: Marten's Berthella
    Scientific name: Berthella martensi
  111. social feather duster, Bispira brunnea
    Common name: Social feather duster
    Scientific name: Bispira brunnea
  112. Closup on twin fan worm or spiral fan worm Bispira volutacornis
    Common name: Banded Fanworm
    Scientific name: Bispira melanostigma
  113. Violet Caribbean Sea Social Feather Duster Colony
    Common name: Social Feather Duster
    Scientific name: Bispira tricyclia
  114. funny animal feather duster worm, popular and demanding pet move tentacles in circular current and hunt for food, healthy and active bristleworm in nano reef marine aquarium
    Common name: Feather Duster Worm
    Scientific name: Bispira viola
  115. Twin fan worm (Bispira volutacornis) in Mediterranean Sea
    Common name: Twin fan worm
    Scientific name: Bispira volutacornis
  116. Imperator-Garnele (Zenopontonia rex) auf  Augenfleck-Seewalze
    Common name: Leopard Sea Cucumber
    Scientific name: Bohadschia argus
  117. Indonesia, Crab on sea cucumber (Lissocarcinus orbicularis) and (Bohadschia marmorata)
    Common name: Pale marbled sea cucumber
    Scientific name: Bohadschia marmorata
  118. Common name: Brownspotted sandfish
    Scientific name: Bohadschia vitiensis
  119. Swimming sea anemone in blue water, Boloceroides mcmurrichi
    Common name: Bulb Anemone
    Scientific name: Boloceroides mcmurrichi
  120. Green spoon worm (Bonellia viridis) in Mediterranean Sea
    Common name: green spoon worm
    Scientific name: Bonellia viridis