Photo of the day (68): Tethys fimbria

Tethys fimbria is a big nudibranch in the family Tethydidae. My specimen is from Croatia and photos were taken in the aquarium:

Tethys fimbria have cerata on sides of its body. Dorsal view from its tail end:

Tethys fimbriaIt will self-amputate its own cerata, when it feels in danger. It is good defensive strategy against fish. But when people tries to catch a Tethys fimbria, then it can lose many of its cerata.

Self-amputated cerata of Tethys fimbria:

Cerata of Tethys fimbriaFrontal view of Tethys fimbria:
Tethys fimbriaIts rhinophores are small. The left rhinohore is that small brown thing:
Rhinophore of Tethys fimbriaIt is known, that species in the family Tethydidae are predators. They hunt small crustaceans. But I have never read which exact small crustaceans they eat. They use the oral velum or oral hood for catching the prey.

Oral velum from the ventral side:
Oral velum of Tethys fimbriaDetail of the oral velum from ventral side:
Detail of oral velum of Tethys fimbriaIf you know what species of crustaceans does Tethys fimbria hunt, let me to know. Thanks.

References

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