Species #28,647 of 42,840
Acanthoserranus ferruginea
Acanthoserranus ferruginea flabellirostrata is a species of alien fish in Fish of Ganymede: a grouper with a spiky dorsal fin, Rust Vent colouring, a fan tail and a beak mouth. It lives in the abyss, 8 km to 25 km under Ganymede’s ice. It was first found by kok on 3 November 2026.
At a glance
| Body plan | Grouper |
|---|---|
| Dorsal fin | Spiky |
| Colouring | Rust Vent |
| Tail | Fan |
| Mouth | Beak |
| Home depth | The abyss (8 km–25 km), diving level 18 |
| Diet | Herbivore |
| First fish’s rarity | Uncommon |
| First found | 3 November 2026 by kok |
| Players who have found it | 1 |
| Swimming today | 1 fish |
What the name means
Acanthoserranus ferruginea means roughly “rust-coloured spine-saw”: from acantho- (spine) and serranus (saw), 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 the abyss (it opens at diving level 18) and look for a grouper 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.