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Fionidae
The family Fionidae contains mostly tiny species with patchy distributions. For that reason, many are seldom seen and poorly known even though some of them are among the most colorful aeolids. Most feed on hydroids and store nematocysts in cnidosacs at the tips of their cerata. However, some  feed on scleractinian corals and do not have cnidosacs. Many species also secrete defensive chemicals from glands in their cerata. This is particularly prominent where it may compensate for the lack of nematocysts. There are about 41 species known from Hawaii in at least five genera (Abronica, Eubranchus, Fiona, Tenellia and Tergipes). The family was recently revised to include the families Tergipedidae  and  Eubranchidae (Cella, et. al., 2016).

We've tentatively assigned undescribed and insufficiently studied Cuthona spp. to Tenellia as per Cella, et. al., 2016.

Abronica sp. #4

Eubranchus mandapamensis

Eubranchus sp. #1

Eubranchus sp. #2





Eubranchus sp. #3

Eubranchus sp. #4

Eubranchus sp. #5

Eubranchus sp. #6





Eubranchus sp. #7

Eubranchus sp. #8

Fiona pinnata

Tenellia acinosa





Tenellia diminutiva

Tenellia lugubris

Tenellia melanobrachia

Tenellia cf. minor





Tenellia ornata

Tenellia perca

Tenellia pinnifera

Tenellia poritophages





Tenellia sp. #1

Tenellia sp. #2

Tenellia sp. #5

Tenellia sp. #6





Tenellia sp. #7

Tenellia sp. #8

Tenellia sp. #9

Tenellia sp. #10





Tenellia sp. #11

Tenellia sp. #12

Tenellia sp. #13

Tenellia sp. #15





Tenellia sp. #16 (PNH)

Tenellia sp. #19

Tenellia sp. #20

Tenellia sp. #21





Tenellia sp. #22

Tenellia sp. #23

Tenellia sp. #24

Tenellia sp. #25





Tergipes(?) sp. #1



 
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