Glasstank

Glasstank is a quiet aquarium where a you keep fish, breed them, and work out for yourselves what the babies will be.

The genetics are not decorative. Dominant and recessive alleles, carriers, ratios and sex-linked traits all behave the way they do in a textbook, and the square is always the yours to complete. Nothing is hidden: every fish shows what it carries before you decide anything.

Nothing ever dies. No timers, no scores, no way to lose, no ads, no accounts, no in-app purchases.