Small roach or rudd (less than a couple of inches long), minnows, sticklebacks, gudgeon, stone loach, bullheads, crucian carp, tench, lots of possibilities. You just can't stick 6oz fish in a 4' tank, and you have to recognise that the larger species will eventually outgrow your tank. Oh, and leave off the predators in a community tank!
Yes, very good advice (and in the other post re pike) The most important thing is NOT TO OVERCROWD YOUR TANK.
When I kept fish many years ago I wound up with a lot of tanks!
It is also important to remove waste matter by filtration and siphoning off debris. Thats fine, but soluble nitrates will build up in the water also. One way to minimise this is to replace about a third of the water with rainwater every month or so - I found another solution Naias microdon
(if my memory serves me) a free floating weed that mops up nitrates, grows like crazy and just needs a handful taking out now and again to keep the nitrates within bounds. It also provides shade and cover for the fish. The only downside is it looks "untidy" but I was keeping fish for study, not for show.
Have kept all the fish mentioned by Steve, plus a few others, including SPINED LOACH.
Kept about half a dozen for a couple of years - lovely little fish, and quite, quite
different in appearance and behaviour from stone loach. Most books on British fish are pretty clueless about spined loach (they think them similar to stone loach) but whereas stone loach are bottom-dwelling throughout the year, spined loach are found in mid-water weedbeds in the summer.
Has anyone else experience of spined loach?
BTW all the fish I kept were taken from the wild (and returned to the wild) No Section 30 in those days !
Edited by Vagabond, 13 January 2007 - 09:05 AM.