Species #33,230 of 42,840

Histiochaetodon atramentaria

The first Histiochaetodon atramentaria ever found, swimming live. Its hidden genes stay hidden.

Histiochaetodon atramentaria furcilata is a species of alien fish in Fish of Ganymede: a butterfly with a sail dorsal fin, Abyss Ink colouring, a fork tail and a wide mouth. It lives in under the ice, 0 m to 300 m under Ganymede’s ice. It was first found by Abyss Angler 908 on 3 November 2026.

At a glance

Body planButterfly
Dorsal finSail
ColouringAbyss Ink
TailFork
MouthWide
Home depthUnder the ice (0 m–300 m), diving level 1
DietHerbivore
First fish’s rarityCommon
First found3 November 2026 by Abyss Angler 908
Players who have found it1
Swimming today1 fish

What the name means

Histiochaetodon atramentaria means roughly “inky sail-bristle-tooth”: from histio- (sail) and chaetodon (bristle-tooth), and atramentaria (inky). Every species name is built from its genes: the dorsal fin and body plan give the genus, the colouring gives the species name, and the tail and mouth the last word.

How to find one

Dive to under the ice (it opens at diving level 1) and look for a butterfly with Abyss Ink colouring, or breed for it: you need all five of its traits to show at once, and some of them may be recessive, hidden in a parent’s second gene copy. The breeding screen shows the exact odds. See how fish genetics work.

All species found so far