Common name: Spotfin frogfish

Scientific name: Antennatus nummifer (Cuvier, 1817)
Spotfin frogfish or Antennatus nummiferSpotfin frogfish - Antennatus nummifer
Spotfin frogfish in IOP, IzuA bright, red frogfish (Antennarius nummifer) sits on coral reef with black background, Maui; Hawaii, United States of America

General information

The Coin-Bearing Frogfish, scientifically known as Antennatus nummifer, is a fascinating species known for its unique appearance and incredible camouflage abilities. This species is part of the Antennariidae family, which includes various species of frogfish. The Coin-Bearing Frogfish is named for the circular, coin-like spots that adorn its body, making it a visually striking addition to any aquarium.

Frogfish in general are ambush predators, using their modified pectoral fins to walk along the substrate and their lure-like appendage, called an esca, to attract prey. The Coin-Bearing Frogfish is no exception, and it is known for its patient hunting strategy, often remaining motionless until an unsuspecting prey comes within reach.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
10 cm (4″)
Care level
Moderate to easy
Diet
Carnivore
Social
Solo
Reefsafe
Yes
Aggression
Semi aggresive
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Anglerfish
    Lophiiformes
  5. Family
    Frogfish
    Antennariidae
  6. Genus
    Frogfish
    Antennatus
  7. Species
    Spotfin frogfish
    Antennatus nummifer (Cuvier, 1817)
  8. Synonyms
    Antennarius japonicus Schultz, 1964
    Antennarius mummifer (Cuvier, 1817)
    Antennarius nummifer (Cuvier, 1817)
    Antennarius sanguifluus Jordan, 1902
    Chironectes chlorostygma Valenciennes, 1837
    Chironectes nummifer Cuvier, 1817

Care

Caring for Antennatus nummifer requires an understanding of its predatory nature and need for suitable hiding spots. An aquarium with live rock formations and ample space for the frogfish to maneuver is essential. They can be fed a diet of live or frozen foods, such as shrimp or small fish, but care should be taken to ensure that tank mates are not small enough to be considered prey.

Reproduction

Reproduction in frogfish is a unique spectacle, with females releasing a ribbon-like mass of eggs into the water column, which is then fertilized by the male. In the aquarium, breeding Antennatus nummifer can be challenging due to their solitary nature and specific mating behaviors.

Habitat

Antennatus nummifer is found in tropical and subtropical waters across the Indo-Pacific region. They are benthic dwellers, often found on coral reefs, rocky substrates, or among sponges at depths ranging from shallow waters to about 100 meters. Their ability to blend into their surroundings makes them both fascinating and challenging to spot in the wild.