Help? - Page 4 - Tropical Fish Keeping - Aquarium fish care and resources
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post #31 of 32 Old 01-12-2011, 02:19 PM Thread Starter
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So 5 or 6 Angels, 12 rosy tetras, 12 rummy nose, 3 black mollies and 6 panda cories? Does that sound okay or is it too much?
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post #32 of 32 Old 01-12-2011, 06:04 PM
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Not a problem with numbers, but here again there are incompatible fish, this time in terms of water parameters.

Mollies absolutely must have basic harder water. They will succumb to fungus and all sorts of issues in soft acidic water.

At the opposite, rummy nose tetra are not at their best in basic hard water, at least not to their full potential lifespan. As noted in our profiles [see Hemigrammus bleheri], this species should have soft, acidic water. They are wild caught, like most cardinal tetra, and share identical needs with respect to water.

The other fish are inclined to soft, acidic water too, but are adaptable to slightly basic water, pH in the low to mid 7's. I would not subject rummynose to this. I don't know what your water parameters are, but this is a significant part of compatibility.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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