Fish Identification

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Fish Identification

Other identification tools | SeaLifeBase

Non-fish Identification: Find Species

Family: Isognomonidae tree oysters (See list of species below)

Select Ocean (marine/brackish) or Continent (freshwater):

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Total number of spines in dorsal and anal fins (optional)

16 species with fin ray counts including ? spines in dorsal and ? in anal fins (see list below)

Isognomon alatus [Flat tree-oyster]	No picture found Isognomon anomioides []	Isognomon bicolor [Bicolor purse-oyster]
No picture found Isognomon californicum []	Isognomon ephippium [Saddle tree oyster]	No picture found Isognomon incisum []
Isognomon isognomum [Wader tree oyster]	No picture found Isognomon janus [Thin purse-oyster]	No picture found Isognomon legumen [Pod tree oyster]
No picture found Isognomon marsupialis []	No picture found Isognomon nucleus []	Isognomon perna [Rayed tree oyster]
No picture found Isognomon radiatus [Radial purse-oyster]	No picture found Isognomon recognitus [Purple purse-oyster]	No picture found Isognomon vulselloides []
No picture found Parviperna nucleus []

16 Species of Family Isognomonidae
(tree oysters)

Sort by: Species Length

Scientific Name	English Name	Distribution	Max. Length (cm)
Isognomon alatus	Flat tree-oyster	Western Atlantic.	7.2 DL
Isognomon anomioides		Indo-Pacific.
Isognomon bicolor	Bicolor purse-oyster	Western Atlantic.	3.5 DL
Isognomon californicum		Eastern Central Pacific
Isognomon ephippium	Saddle tree oyster	Indo-West Pacific	14 SHL
Isognomon incisum		Eastern Pacific.
Isognomon isognomum	Wader tree oyster	Indo-Pacific	15 ShL
Isognomon janus	Thin purse-oyster	Eastern Pacific.
Isognomon legumen	Pod tree oyster	Indo-Pacific.
Isognomon marsupialis		Northwest Pacific
Isognomon nucleus		Indo-Pacific.
Isognomon perna	Rayed tree oyster	Indo-West Pacific	7.5 ShL
Isognomon radiatus	Radial purse-oyster	Western Atlantic.
Isognomon recognitus	Purple purse-oyster	Eastern Pacific.
Isognomon vulselloides		Western Atlantic.	1.58 DL
Parviperna nucleus		Indo-Pacific.	1.62 TL

Other identification tools in SeaLifeBase

Quick Identification

Identification keys

Identification by morphometrics

Identification by pictures:

          If you already know the Family, go to Search SeaLifeBase, select Family and click on 'Identification by pictures' to display all available pictures in SeaLifeBase for the family.

          If you already know the Country, go to Search SeaLifeBase, select Country and click on 'Identification by pictures' to display all available pictures in SeaLifeBase for the country.

          If you already know the Ecosystem, go to Search SeaLifeBase, select Ecosystem and click on 'Identification by pictures' to display all available pictures in SeaLifeBase for the ecosystem.

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