I bought 20 of them to feed my arowana but my arowana died. Each were 1cm long and the guy told me they are from backrish water and I can put them in freshwater. I was just wondering what type of system do they belong to [fresh, backrish or marine]
post some picks and we can tell you what kind of tilapia they are, but they will live in freshwater just fine, they are super hardy fish too, but most of them get huge, up to 15 " and they grow fast
Growth rate is dependent on to many variables such as tank size, water conditions, food rations, etc hence it will usually vary depending on how the aquarist raises them.