Species #3,026 of 42,840
Histiodiscus ferruginea
Histiodiscus ferruginea flabellilata is a species of alien fish in Fish of Ganymede: a deep with a sail dorsal fin, Rust Vent colouring, a fan tail and a wide mouth. It lives in midnight water, 2 km to 8 km under Ganymede’s ice. It was first found by Vent Keeper 347 on 1 November 2026.
At a glance
| Body plan | Deep |
|---|---|
| Dorsal fin | Sail |
| Colouring | Rust Vent |
| Tail | Fan |
| Mouth | Wide |
| Home depth | Midnight water (2 km–8 km), diving level 10 |
| Diet | Omnivore |
| First fish’s rarity | Epic |
| First found | 1 November 2026 by Vent Keeper 347 |
| Players who have found it | 3 |
| Swimming today | 3 fish |
What the name means
Histiodiscus ferruginea means roughly “rust-coloured sail-disc”: from histio- (sail) and discus (disc), 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 midnight water (it opens at diving level 10) and look for a deep 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.