Multis parva
An early shrimp/crayfish ancestor, is a small crustacean from decapoda. It scavenges the floors of zone 15. They’re about the size of a newborn shrimplet, and feed off of smallller invertebrates, algaes, and bacterias. They live in groups upwards to 100 of them, and when they swim up they make easy targets. When colder water comes in, this stimulates them to breeding. The females of the species lack a saddle, but several molts before breeding their anatomy is slightly altered. This means that they cannot breed in seasons other than winter, nor can it be artificially induced with cold water. Clutches are 30-45, and can be manually excreted before the eggs are ready and mature without a mother, like an egg layer. The eggs show some level of resilience, and in rare cases can survive after some time being dried out. When hatched, the babies of m. Parva migrate to whatever faster moving warmer waters are closer, because biofilm is harbored more on warmer rocks.