Hi... I want to start a new tank up with a Rhom... I have checked my local shops and haven't found one anywhere. I was thinking about getting one from Shark Aquarium online?? A 1.5-2" for $15.00 plus shipping. I know this is a fair price. But is this fish for sure gonna be a Rhom?? Can you tell if it is a rhom at that size for sure? Plus ordering them thru mail? Also I have a 20 Gallon tank I am planning on keeping him in until he is about 4-5 inches then getting something bigger. Is this ok? Thanks for the help!