Quote:
Originally posted by AlliCat0225
What you can try to do is look closely at the fins and mouth of each fish. The male should have the larger mouth and his second dorsal fin should be longer than the females.
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While those were both the original conjectures, neither has turned out to be true. Using those methods to sex BC will give you about a 50:50 chance of getting a male:female pair.
One method that I've found to be more successful than any other is to shop at a store that will get many of them in at once (tank-raised, of course). Just watch the tank for a few minutes, and you can usually find a couple that stay together more than the rest (or a couple of couples). At my old store in my old city, the guy who ran the saltwater section would pull out those pairs and put them in another tank as he discovered them.
Dave