Cuthona amoena is a small aeolid nudibranch found in
shallow water feeding on hydroids growing on algae
(Cystoseira sp.). It is generally missed because of its
small size and drab colours (but well camouflaged from
predators). Yellowish white to gold coloured blotches are
present on the body.
Propodial tentacles: Absent, (foot rounded). Oral tentacles: 2 in number, short, with brown rings and
white pigment. Rhinophores: Translucent with sub-terminal brown ring
and superficial white pigment, smooth. Cerata: Green to green-brown coloured with white tips. Foot: Translucent without appendages.
Size range: 3-5mm. Rare.
Specific characteristics: This species may be mistaken
for other Cuthona sp. The colour of the cerata, yellowish
pigment on body and the sub-terminal rings on
rhinophores may be used to identify this species.