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Discussion Starter · #1 ·
Does anyone have any experience with the breeding behaviour of Ottos? I have 5 in my tank and one of them has been getting increasingly round in the belly area. The other 4 have become super active around this particular one including some unusual behaviour such as curling their body in a tight U around her head and what appears to be gently cleaning her back and sides. This lasted a few days and has since calmed down now but I was wondering what could be the cause.
 
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