A few tardigrades are predacious carnivores.
They are thought to be predacious.
Among closely related species of the family Salmonidae, there is a tendency for the more predacious species to have more numerous pyloric ceca.
Predacious insects feed on small, weak species; parasitic insects live on or in a host and feed at its expense.
Notopterids are predacious and nocturnal and in some areas are sought as food.
Most fishes are predacious, feeding on small invertebrates or other fishes and have simple conical teeth on the jaws, on at least some of the bones of the roof of the mouth, and on special gill arch structures just in front of the esophagus.
Most predacious fishes swallow their prey whole, and the teeth are used for grasping and holding prey, for orienting prey to be swallowed (head first) and for working the prey toward the esophagus.
In most predacious fishes it is a simple straight or curved tube or pouch with a muscular wall and a glandular lining.
It is short in predacious forms, sometimes no longer than the body cavity, but long in herbivorous forms, being coiled and several times longer than the entire length of the fish in some species of South American catfishes.
Damsel bug (family Nabidae), also called nabid bug, any predacious insect in the true bug order, Heteroptera, that feeds on insect eggs, aphids, and small caterpillars.
The ammonoids were shelled forms, and nearly all are thought to have been predacious in habit.
