Hello can someone help me identify this fish please? I bought it at Walmart about a year ago and have been trying to figure out what it is. I don't think it had the correct info on there. It will only eat sinking pellets so I assume it must be a bottom feeder. What is this fish so that I can care for it appropriately. Please help. Its been thriving but there are so many fish online to narrow it down to what it is. It's not a city though because it's over 3 inches long. It's at 4 right now.
P.S. I'm new to this community. I'm in your care.