18-Scorpii-4 Fishes

The Squirishes (or Squidfish) are pseudo-vertebrate animals that essentially resemble fish. Despite this morphology acquired by evolutionary convergence, their origin seems closer to an 18Scorpii equivalent of cephalopods or mollusks.
The group is morphologically very diverse, with various adaptations of body, fins or oral arms (tentacles modified to serve as hunting or feeding tools).
Among some notable species:
The Nautilus-carp (or Cyprinautilus) is a freshwater Squirish. It is a armored herbivore belonging to the group of Squirishes with radula. It moves almost exclusively with its fins which undulate without having to curve its body.
The Lepasion-pike (or Esoxichteuthis) is a freshwater Squirish and predator of small species of Nautilus-carp. Its oral arms have adapted into strong jaws to trap and crush its prey. Its long body allows it to camouflage itself in vegetation and its undulating fins allow it to remain discreet (like the Aulostomidae).
The Tentoperch (or Centroplochamus) is a freshwater Squirish. It is a small predator that feeds on invertebrates that it catches with its modified oral arms. To protect itself from its predators, this group of fish has developed horny spines on its back and belly. And some species (including this one) live in schools of fish.
The Deinorhamphus, sometimes nicknamed "Scorpii piranha", is a carnivorous Squirish that lives in rivers. Its group is characterized by the disappearance of its upper oral arm, to make way for an enormous beak that it uses to cut the flesh of its prey or carrion.
The Red Nikur (Nicurus or formerly Teuthisalmo) is a river Squirish of rather large size. Like our salmon, it is a predator of small crustaceans, which stores a lot of fat and which migrates to reproduce (but in its case, it reproduces at sea and lives in rivers).
The Scombriform (or Spiniplochamus) is a marine Squirish that vaguely resembles a Mackerel by its striped pattern. Its long oral arms are covered with retractable claw-tooths that allow it to catch small prey. But apart from this frightening appearance, it is not aggressive.
The Teuthicarcharia (or squid shark) are large marine Squirishes. This group is one of the most abundant, of the 5 groups of squaliform Squirishes. This warm-colored species is a regular in the pelagic zone, and although it can be seen close to reefs, this Squirish hunts exclusively in the open sea.
The Hualoichteuthis is a deep-sea Squirish. Its body is transparent like glass and has only been described by observations of corpses and furtive appearances during dives. We do not know what it feeds on, but it seems to have predatory oral arms.
The Lantern Squirish (or Illiciobrachius) is a deep-sea Squirish. Its upper oral arm seems to have evolved into a tentacle ending in a luminous lure to attract its prey near its other clawed oral arms and its strangely mobile beak. On the other hand, it is a poor swimmer who prefers to stay afloat thanks to its fleshy fins.