Species found in El Tanque (max. depth 26 m):
Stoplight parrotfish (Sparisoma viride)
Houndfish (Tylosurus crocodilus)
Creole wrasse (Clepticus parrae)
Schoolmaster (Lutjanus apodus)
Sand diver (Synodus intermedius)
Bluehead (Thalassoma bifasciatum)
Blue tang (Acanthurus coeruleus)
Bandtail puffer (Sphoeroides spengleri)
Threespot damselfish (Stegastes planifrons)
Garden eel (Heteroconger longissimus)
Barred hamlet (Hypoplectrus puella)
Sharpnose puffer (Canthigaster rostrata)
Yellowhead wrasse (Halichoeres garnoti)
Blue chromis (Chromis cyanea)
Blackcap basslet (Gramma melacara)
Yellowfin mojarra (Gerres cinereus)
Yellowhead jawfish (Opistognathus aurifrons)
Masked goby (Coryphopterus personatus)
Bluestriped grunt (Haemulon sciurus)
Indigo hamlet (Hypoplectrus indigo)
Great barracuda (Sphyraena barracuda)
Corky sea finger (Briareum asbestinum)
Zoanthid (Zoanthidea)
Knobby sea rod (Eunicea)
Grooved brain coral (Diploria labyrinthiformis)
Yellow tube sponge (Aplysina fistularis)
Orange icing sponge (Mycale laevis)
Azure vase sponge (Callyspongia plicifera)
Scattered pore rope sponge (Aplysina fulva)
Stove-pipe sponge (Aplysina archeri)
Pitted sponge (Verongula rigida)
Tubular thicket algae (Galaxaura)
Flamingo tongue (Cyphoma gibbosum)
Banded coral shrimp (Stenopus hispidus)
Yellowline arrow crab (Stenorhynchus seticornis)
