Am 53 years young and have kept fish since the early 1970's.
Never heard any mention of the stipulation as to tank sizes of less than 20 gal nor of fish that do not exceed four inches. I agree that that info would make it a little more plausible. Also agree that danios, with the exception of giant danios ,would be best suited for twenty gal long or larger as opposed to ten gal. I made no mention of them for that reason. In any event,, the one inch per gal rule is as stated flawed in it's basic principal yet many site it as pertinent. I have kept cichlids in tanks that many would view as overstocked yet with proper filtration and proper maint it can and is being done by many.
Never heard any mention of the stipulation as to tank sizes of less than 20 gal nor of fish that do not exceed four inches. I agree that that info would make it a little more plausible. Also agree that danios, with the exception of giant danios ,would be best suited for twenty gal long or larger as opposed to ten gal. I made no mention of them for that reason. In any event,, the one inch per gal rule is as stated flawed in it's basic principal yet many site it as pertinent. I have kept cichlids in tanks that many would view as overstocked yet with proper filtration and proper maint it can and is being done by many.
I was just using danios as an example.
I like the age enthusiasm