06-03-2011, 06:26 PM
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I like your substrate very much, it has an interest to it. Nice work. I agree on a black background, something as simple as a piece of plain black construction paper from the craft store.
You absolutely need something mid-to-upper water though. Both for appearance, but even more for the security of the fish. Plants would work, or a branch piece of wood leaning vertical. And/or some floating plants. This would make your fish happy, they would not feel so "exposed" which is very stressful.
What is the water temp? I assume room, I don't think I see a heater. That is good for those fish, they do not last well at warm temperatures. When it comes time to find other fish, bear the temperature in mind. Neon tetra for instance would be good tankmates.
With that sort of stream substrate, think of stream fish. We have fish profiles here, you could browse through them for ideas; second tab from the left in the blue bar across the top, and in a post if the name is shaded you can click on it to see the profile of that fish.
And welcome to Tropical Fish Keeping. Glad you joined us.