They're having a field day because I put some water into the tank using a flexible bowl with which I could control the flow, which stirred up edible stuff and scared the two adult fish to go hide behind a rock. So the little ones are swimming all over, including the top, rather than keeping to the gravel and features. Also, I didn't realise it but the algae on the back wall is rather porous and the babies are small enough that they can just swim behind it if they want to hide from the larger ones. Algae magnifies, apparently, as whenever one swims behind the layer, it suddenly seems bigger. Hmm.
Okay, back to tasks I need to do.
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