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Mitchell Weintraub, Florida, U.S.A.

How can you identify the difference between 2 different types of Female Endlers, Guppies or Gambusia?

Gambusia Anal Fin Ray Count
Identifying Types of Gambusia as compared with Endlers

In this case, in order to be able to identify which of your Female Livebearers is the female Ginga Sulphureus, you’ll need to count the number of Anal Fin rays and compare them with a known female of the type of Endler or Guppy you presume the fish may be and a Ginga sulphureus female. Unfortunately I do not know the counts on these off the top of my head, but I believe they are different especially if you are dealing with an N Class Pure Endler as compared with a mostly guppy genetic line such as the Ginga sulphureus… That’s what I’d do to identify the fish in question. If they are the same then compare the dorsal fin ray counts as well.