cplawrence
Aquarium Advice Freak
I currently have six flame tetras in a 29 gallon tank. While I will see them hanging around with each other from time to time, they are often scattered throughout the tank. The question I have is how many tetras do you need to really see them form a tight school? I found some indications that this only occurs when there is some sort of threat (which hopefully won't be happening in my tank). Is this true?