How to ID a grey bamboo shark rather than brown

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Teen Aquarist

Gambusia
MFK Member
Oct 23, 2008
100
1
18
US
How can I easly ID a grey bamboo shark to make sure I would get a 2' shark not a 4'. Thanks
 
Well - it not very easy to tell them apart. Both species are banded as pups.

The easiest way is the shape of the dorsal fins - grey have rounded dorsals, while browns tend to have pointed triangluar shaped dorsal fins.
 
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