Arostrolarian

Splitting from its ancestor, the arostrolarian has spread out, following the yellowstripe gilltails. The arostrolarian has evolved a snout that makes it easier to eat prey. The snout also makes them more hydrodynamic, making them faster than their ancestor.

The arostrolarians swim in large pods, usually made up of four males and four females. The pod formation has the adults surrounding their children, preventing predators from easily getting at their young. Females normally give birth to four or six children, and the parents stay with the children for ten years. During this time, the parents will bring them food and teach them how to survive.

The arostrolarian mating season occurs in spring, and lasts until the middle of summer. During this time, the orange on the females back will become brighter in coloration. When a mate is found, this orange becomes even brighter in coloration. The males will try to seduce the females by swinging their tail around, and by making flipper movements. If the flipper and tail movements are in harmony, the male and female will mate.