Species #25,763 of 42,840

Histiosphyraena aurea

The first Histiosphyraena aurea ever found, swimming live. Its hidden genes stay hidden.

Histiosphyraena aurea rotundidentata is a species of alien fish in Fish of Ganymede: a barracuda with a sail dorsal fin, Brine Gold colouring, a round tail and a fanged mouth. It lives in midnight water, 2 km to 8 km under Ganymede’s ice. It was first found by kok on 6 November 2026.

At a glance

Body planBarracuda
Dorsal finSail
ColouringBrine Gold
TailRound
MouthFanged
Home depthMidnight water (2 km–8 km), diving level 10
DietCarnivore
First fish’s rarityUncommon
First found6 November 2026 by kok
Players who have found it1
Swimming today1 fish

What the name means

Histiosphyraena aurea means roughly “golden sail-hammer”: from histio- (sail) and sphyraena (hammer), and aurea (golden). 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 midnight water (it opens at diving level 10) and look for a barracuda with Brine Gold 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