I have noticed a small change in the betta's behavior. Who says there isn't high activity in a rice paddy though? You have heron's, storks, snakes, spiders, a whole list of other predators out there just waiting to gobble you up. Not to mention you have to find and catch your own bugs to eat.
Yeah yeah yeah, he's not a plakat and he is a man made species. However the dominant allehel is the one being expressed, and I have to believe that in some distant past, nature herself, through chance and mutation, created a wild BETTA, who screwed around and passed down the genes that hobbyist at first in SIAM then, the world round, developed into Betta Splendens; both for SPORT and pleasure. I hope he (betta splendens) adapts to the new environment which is now a very active place, of mostly S. American originating fish. Though some of the plants originate in SE Asia. Adaptation is key to survival. Even for humans. I still have his (betta splendens) one gallon tank on stand by too. The betta's fins are improving and he rules the tank, by SIZE alone. ALL FISH RESPECT the BETTA, and the water chemistry and temp (78) are kept to the betta's liking.