Famous Cold Water Pleco Pets At Home 2022. Pleco fish can tolerate a wide range of temperatures, but if the water is too cold, they may become lethargic and may not eat. Their temperature range is 73 to 82 degrees f.
Some plecos can do well at lower temperatures for some time, but in order for. Plecos are not a good choice for ponds. I read that common plecos can survive down to 55 degrees f but anything below that they drop dead.