If my name appears at the bottom of a profile as one of the contributors, the profile is current. Though this does not mean it may not need revision.
Slips sometimes get past me.
On this issue of temperature, aquarists have to recognize a couple of things. First, the temperature ranges for each species are taken from ichthyologists and biologists, and if any reputable source disagrees with the others, I list that separately. Rarely does this occur.
Second, tropical waters are not consistent in temperature, and here again most home aquaria are a very artificial environment. There are day highs and night lows, which can be several degrees. There are seasonal variations, warmer during the non-rainy season and cooler during the rainy/wet season. And co-incidentally, it is during the "cooler" season that fish are most active, spawning and feeding, which should tell us something [see below]. Most of us maintain the same temperature day/night and throughout the year, except for summer increases due to hot weather. This is placing the fish in a very un-natural environment to begin with, which makes it even more important to ensure the "constant" temperature is the best temperature.
Third, all fish with few exceptions will live healthier at lower temperatures which means roughly mid-range for that species. The extremes of low and high are tolerable for the species, and might even be so for the long-term. But as noted above, for most species--there are always exceptions--the lower temperatures (mid-range) will be best. The internal physiological balances are easier for the fish to maintain, food digestion is much easier, the immune system is stronger, etc. We know how we feel on very hot days; so do fish, and remember that they cannot control their internal temperature as we can.