Greater soapfish

Rypticus saponaceus

Rypticus saponaceus is a species of soapfish in the Rypticus genus. It has a max length of 35.0 cm, with a common length of 25.0 cm.
Greater soapfish - Rypticus saponaceus Diving in Sal, Cabo Verde.  Cape Verde,Fall,Geotagged,Greater soapfish,Rypticus saponaceus

Appearance

Dorsal spines (total): 3; Dorsal soft rays (total): 23-25. Pale spots about the size of the pupil or smaller on body and some on dorsal fin.
Greater Soapfish Sep 15, 2017. Seen in Tori's Reef, Bonaire.
Apparently they release foamy mucus when disturbed, reason why they are called soapfish. Caribbean Netherlands,Geotagged,Greater soapfish,Rypticus saponaceus,Summer

Habitat

A solitary species inhabiting shallow water on bottoms with eroded limestone or mixed sand and rocks, as well as around reefs. Often found lying motionless against rocks. Secretes copious mucus which makes its surface slimy and when disturbed the slime turns into a soapy foam. The mucus has been shown to contain a toxic protein. Nocturnal, frequently seen around the bases of coral colonies and near mouths of caves.

References:

Some text fragments are auto parsed from Wikipedia.

http://www.fishbase.org/summary/1056
Taxonomy
KingdomAnimalia
DivisionChordata
ClassActinopterygii
OrderPerciformes
FamilyGrammistidae
GenusRypticus
SpeciesRypticus saponaceus