Male or Female

[hudsey23]

Hi i have 3 goldfish 1 black moor and 1 weather loach as sadly my other weather loach died yesterday.

Anyways how can i tell the difference between the fish wether they are male or female.

Especially with my wether loach the one i have left is a lot shorter than the other who died?

[Graeme Robson]

With weather loaches the front ray of pectoral fin in male is larger. Female's pectoral fin is rounder.