Looks heavily gravid to me but I don't think that is
Acanthocobitis zonalternans, there are subtle colour differences but I don't think
A. zonalternans have such a pronounced fork in the tail (but I am no expert).
I know Graeme has some of these so I am sure he will know for certain

Pardon my honesty - I am a Northerner
14 loach species bred, which will be next?