so been kinda having a train of thought about various aspects of fish, and i figure that i'd kinda put it here
one, fish weight
so not all fish are equal, some are more equal than others, right? the general think i'm thinking is that maybe some fish should take up MORE space in a tank than others, since you know, they'd physically take up more space. so some fish would have a heigher "weight" to them, meaning they take up multiple slots in a tank. a general idea:
goldfish, feederfish, glowfish, shrimp: 1 fish
baby space carp, clownfish: 2 fish
salmon: 3 fish
shark, catfish, eel: 4 fish
note: some of the bigger fish can't completely fill a tank, to allow for feeder fish in
and two, sturgeon
sturgeon being a new type of fish, only available from off station(say, a cargo order). with a weight of 4. sturgeon require a diet of shrimp rather than feeder fish, but if raised give delectable flesh and tasty roe, the supreme food for any snobbish heads of staff.
and that's about it. ignore the fish weight system if you really want, but the sturgeon one is essentially the core thing i've been thinking about