Fin's Fish Guide
Blotchfin dragonet
The Blotchfin dragonet (Callionymus filamentosus) is a saltwater fish of the family Callionymidae that grows up to 20 cm.
Originally widespread in the Indo-Pacific, on sandy and silty bottoms in coastal water.
Description
The blotchfin dragonet is a small, flattened bottom fish of the family Callionymidae reaching about 20 cm. The broad, flat head has the eyes on top, and the species shows a colour difference between the sexes: breeding males have a greatly elongated, thread-like first dorsal-fin ray and brighter colours than the sandy-brown spotted females. The species is native to the Indo-Pacific but has entered the eastern Mediterranean through the Suez Canal, where as a Lessepsian migrant it has become established. On sand and mud bottoms it searches for small crustaceans, worms and molluscs. In the breeding season the male performs a courtship dance. Because of its small size it has no fishery importance.
Frequently asked questions
How do you recognise the Blotchfin dragonet?
The Blotchfin dragonet has an elongate, eel-like body, is mainly brown and shows a spots pattern. Flattened bottom fish with the eyes on top of the head; ripe males have a greatly elongated, thread-like first dorsal fin ray.
Where does the Blotchfin dragonet live?
The Blotchfin dragonet lives in the sea (marine waters) and is mostly found around sand or mud bottom. Originally widespread in the Indo-Pacific, on sandy and silty bottoms in coastal water.
How big does the Blotchfin dragonet get?
The Blotchfin dragonet grows to a maximum of about 20 cm.
Is the Blotchfin dragonet dangerous to humans?
No, the Blotchfin dragonet is harmless to humans. None required: this species is harmless to humans.
Is the Blotchfin dragonet edible?
The Blotchfin dragonet is not usually eaten.
More photos
Easily confused with
These species look like the Blotchfin dragonet and live in the same waters.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Callionymus
More from the family Callionymidae
Want the complete picture on the Blotchfin dragonet?
Point your camera at the fish and Fin names the species in seconds. Free, and the Blotchfin dragonet is one of 12,519 species in the app.