Common name: Chromista

Chromista is a diverse and intriguing kingdom of eukaryotic organisms that includes a wide range of species, many of which are of significant interest to reefkeeping hobbyists. This kingdom encompasses various groups such as diatoms, brown algae, and oomycetes, among others. One of the most notable members of this kingdom is the brown algae, which includes the well-known giant kelp, a vital component of marine ecosystems.

In the context of reef aquariums, certain members of the Chromista kingdom, like some species of algae, can be both beneficial and challenging. For example, macroalgae such as those belonging to the genus Padina can be a beautiful addition to a marine aquarium, providing both aesthetic appeal and functional benefits such as nutrient export and habitat for small marine creatures. However, some algae can become problematic if they grow out of control, competing with corals and other desirable organisms for space and resources.

Chromista also includes diatoms, which are often among the first organisms to colonize new or disturbed habitats. In aquariums, diatom blooms are a common occurrence, especially in newly established tanks, where they are often seen as a brownish film on surfaces. While typically harmless, diatom blooms can be a sign of excess nutrients and may require management through improved water quality and nutrient control.

Overall, the Chromista kingdom offers a fascinating glimpse into the complexity of marine ecosystems. For hobbyists, understanding the role of Chromista in their aquariums can lead to more effective management strategies and a healthier, more balanced marine environment.

1. Common name: Dictyota bartayresiana

   Scientific name: Dictyota bartayresiana
2. 
   Common name: forkweed

   Scientific name: Dictyota dichotoma
3. 
   Common name: An Chasfheamainn

   Scientific name: Fucus spiralis
4. 
   Common name: Bladder Wrack

   Scientific name: Fucus vesiculosus
5. 
   Common name: Oarweed

   Scientific name: Laminaria digitata
6. 
   Common name: giant kelp

   Scientific name: Macrocystis pyrifera
7. 
   Common name: Peacock's Tail

   Scientific name: Padina australis
8. 
   Common name: Funnelweed

   Scientific name: Padina gymnospora
9. 
   Common name: Peacock's Tail

   Scientific name: Padina pavonica
10. Common name: Sargassum filipendula

    Scientific name: Sargassum filipendula
11. 
    Common name: Gulfweed

    Scientific name: Sargassum fluitans
12. 
    Common name: Sargassum Shrimp

    Scientific name: Sargassum hystrix
13. Common name: Sargassum johnstonii

    Scientific name: Sargassum johnstonii
14. Common name: gulf weed

    Scientific name: Sargassum natans
15. Common name: Sargassum polyphyllum

    Scientific name: Sargassum polyphyllum
16. 
    Common name: Gulfweed

    Scientific name: Sargassum sinicola
17. 
    Common name: Sargassum Weed

    Scientific name: Sargassum vulgare
18. Common name: Peacock's Tail

    Scientific name: Stypopodium zonale