I have a 5.5 Gallon Blackwater that's fully cycled with plants and driftwood. I have a betta in there with long fins so I'd prefer non-nippy fish. But basically, I'd really like a small group fish that would really shine and stand out in blackwater-- is there a species of Endlers that glows in light, giving off a radioactive effect? I'm lookin for a real eye-catching and gorgeous nano fish. What would you guys suggest??