tcamos said:Fatness, activity, fin condition, scale condition, the ability to defend itself and/or compete for resources in the tank. I've seen yellow tangs that are surviving and when you compare them to one that is thriving it's easy to quantify the difference.
tcamos said:For fatness I specifically have certain fish in mind that I commonly see too thin. Seeing them robust and healthy makes it so obvious they are doing well. Tangs of course come to mind, as do mandarin, white cloud mountain minnows, clown loaches, and a few others that really wear their health in their girth.
Ch4rlie said:Yes, was aware of those guidelines from AAGB being for novice or beginners of betta keeping, i was just using breeders for an example for those who may keep bettas in 5 litres tanks short term, really as an personal preference as I think 5 litres is a very small tank for a betta to live in for it's life.
That is just my humble opinion, I have never kept a betta, though i may do so at some point for my boy
Baccus said:Personally I would still err on the side of a bigger tank, especially for a new fish keeper that is often going to struggle with all the confusing facts and statistics often associated with maintaining water quality. Also speaking from experience I know in Australia it is not easy to find small enough heaters for small tanks, and in most places in Australia we can really struggle with the opposite problem of tanks getting far too hot in summer. To much heat will also stress the fish and can bring on illnesses, it will also make the fighter more reliant on breathing air from the surface since warmer water carries less oxygen.
eaglesaquarium said:So, the new question is likely best described as: "What is the minimum optimum size tank for a LONE betta?