Other identification tools | SeaLifeBase

Non-fish Identification: Find Species

Family: Astacidae crayfishes (See list of species below)

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



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


Astacus astacus
[Noble crayfish]


Pacifastacus leniusculus
[Signal crayfish]


Pontastacus leptodactylus
[Danube crayfish]
3 Species of Family Astacidae
(crayfishes)
Sort by: Species Length
Scientific Name English Name Distribution Max. Length (cm)
Astacus astacus Noble crayfish Europe inland waters 25 TL
Pacifastacus leniusculus Signal crayfish Introduced in Europe & No 15.9 TL
Pontastacus leptodactylus Danube crayfish Ponto-Caspian Region. 18.3 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.