Fin's Fish Guide
The Rock clingfish (Arcos rhodospilus) is a saltwater fish of the family Gobiesocidae that grows up to 5 cm.
Description
The rock clingfish is a small clingfish of the family Gobiesocidae from the eastern Pacific. The species reaches only about 5 cm and has a flattened, tadpole-like body without scales. On the belly it bears a powerful sucker disc, formed from fused pelvic fins, with which it clings firmly to rocks in the turbulent surge. It inhabits shallow rocky areas and feeds on zooplankton, algae and small bottom invertebrates. Owing to its small size and hidden life among stones the species is little noticed.
Frequently asked questions
How do you recognise the Rock clingfish?
The Rock clingfish has an elongate, eel-like body, is mainly brown and shows a spots pattern. Ventral sucker of fused pelvic fins to cling to rocks in the surf.
Where does the Rock clingfish live?
The Rock clingfish lives in the sea (marine waters) and is mostly found around sand or mud bottom. Eastern Pacific, in shallow rocky areas.
How big does the Rock clingfish get?
The Rock clingfish grows to a maximum of about 5 cm. On average the species is around 4 cm.
Is the Rock clingfish dangerous to humans?
No, the Rock clingfish is harmless to humans. None required: this species is harmless to humans.
Is the Rock clingfish edible?
The Rock clingfish is not usually eaten.
Want the complete picture on the Rock clingfish?
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Arcos
More from the family Gobiesocidae
Want the complete picture on the Rock clingfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Rock clingfish is one of 12,519 species in the app.