Species #3,135 of 42,840

Histiodiscus algarum

The first Histiodiscus algarum ever found, swimming live. Its hidden genes stay hidden.

Histiodiscus algarum xiphirostrata is a species of alien fish in Fish of Ganymede: a deep with a sail dorsal fin, Kelp Ghost colouring, a sword 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 4 November 2026.

At a glance

Body planDeep
Dorsal finSail
ColouringKelp Ghost
TailSword
MouthBeak
Home depthThe abyss (8 km–25 km), diving level 18
DietHerbivore
First fish’s rarityUncommon
First found4 November 2026 by kok
Players who have found it1
Swimming today1 fish

What the name means

Histiodiscus algarum means roughly “of the kelp sail-disc”: from histio- (sail) and discus (disc), and algarum (of the kelp). 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 deep with Kelp Ghost 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