Posted July 20, 2026 by Kellwright Studios
New: koi breeding — the headline feature. From level 3 you can build a spawning tank in the shop (round, small, blue). Bring two koi ready to spawn (from 35 cm) over from the koi tank with the transport tub; once two are in and the water is at 20–24 °C, they spawn on their own — nothing to select. The spawn sits visibly on the tank floor, then the parents have to come back out via tub, or they'll eat it. The fry inherit both parents' traits plus a hefty random share. After hatching you cull: weak fish go into the tub as culls (sold at the PC), the ones you keep you fetch into the grow-out tank with an empty tub. Ancestry and generation are shown for every koi under "Show details". A dedicated quest walks you through the first spawn.
New: multiple tanks of the same species — three trout or three koi tanks are now possible. An emptied tank can be repurposed to a different species at the tablet (water values stay as they are).
New: time-lapse 1× / 3× / 10× (was 1/2/3) — for the multi-day breeding phases.
Balancing: ammonia tolerance of all tanks +25 %; feeding produces less ammonia (overfeeding stays expensive); the tank warning sound can now be acknowledged (glance at the measuring tablet).
Also: Discord button in the main menu; fix for the occasionally missing request indicator; missing English texts added, manual updated to the new breeding flow.