Species #25,711 of 42,840

Histiosphyraena ferruginea

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

Histiosphyraena ferruginea furciparva is a species of alien fish in Fish of Ganymede: a barracuda with a sail dorsal fin, Rust Vent colouring, a fork tail and a small mouth. It lives in twilight drift, 300 m to 2 km under Ganymede’s ice. It was first found by FrostAngler257 on 6 November 2026.

At a glance

Body planBarracuda
Dorsal finSail
ColouringRust Vent
TailFork
MouthSmall
Home depthTwilight drift (300 m–2 km), diving level 4
DietOmnivore
First fish’s rarityCommon
First found6 November 2026 by FrostAngler257
Players who have found it1
Swimming today1 fish

What the name means

Histiosphyraena ferruginea means roughly “rust-coloured sail-hammer”: from histio- (sail) and sphyraena (hammer), and ferruginea (rust-coloured). 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 twilight drift (it opens at diving level 4) and look for a barracuda with Rust Vent 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