Jaetus

Jaetus is a genus of large marine snails, commonly known as the rose-mouthed murex. These gastropods belong to the family Muricidae, which are predatory sea snails. Jaetus species are found in the Indo-Pacific region, inhabiting tropical and subtropical waters. They are typically found in shallow, rocky areas or coral reefs, where they can find their prey.

The most distinctive feature of Jaetus snails is their shell, which is often large, spiny, and ornamented with elaborate frills or ribs. The aperture of the shell is typically wide and can be lined with teeth. The common name "rose-mouthed murex" comes from the often pinkish or reddish coloration of the interior of the shell's opening, which can resemble a rose.

These snails are carnivores and prey on other invertebrates, such as bivalves and other gastropods. They use their radula, a ribbon of tiny teeth, to bore into the shells of their prey or to dislodge them from their hiding places. Some species are known to be particularly aggressive predators.

Reproduction in Jaetus snails typically involves external fertilization, with the female laying egg capsules that are attached to a substrate. The development of the young snails can vary, with some species exhibiting direct development and others having a planktonic larval stage. The exact life cycle and reproductive strategies can differ between species within the genus. Jaetus snails are not generally considered a significant food source for humans, though in some local areas they may be collected.