i got 3-4 cm. length like nudidbranch hitchaker. i could not take photos but it has a 2 pipe and spray something like smoke to the water sometimes. what can it be ?
thank you very much David.
i think it is a Stomatella varia.
Breeding has been observed during the daytime with all individuals climbing up to high points on the live rock and simultaneously releasing their eggs and sperm into the water. This can cause the tank water to look milky for a short time, but is nothing to worry about. The filter feeders get to eat well when this occurs.