This is regarding my mams fish, not mine. He is very happy where he is, he is colouring up and eating, all the usual healthy things.. But what can we give him/do with him to keep him entertained? He has a plant in his tank, may add a few more soon. Some shells and stones ontop of the gravel and we use a mirror to the glass every few days for a bit of exercise. He loves chasing a finger around the surface of the water, so we were thinking maybe usuaing a pingpong ball to bob around? Ive also heared marbles are fun for them. Any other suggestions?
Heres a pic of him =)
Heres a pic of him =)

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