Among the three most common types of trout – brown, rainbow, and brook – rainbow trout make the best species for aquaponics due to their hardiness. rainbow trout can withstand the varying conditions an aquaponics system will present. they are considered a cold water fish and thrive in temperatures between 55 and 65 degrees f.. Yellow perch is the best species for aquaponics because they do well in moderate temperatures and can cope with a wide ph range. the water needs to be between 67° and 77° f, and the fish will grow to about 15 inches in size and 2.2 pounds in weight. the survival ph range is 6.5 to 8.5, which is the widest range of all aquaponic species..
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