ImACoolguy
Aquarium Advice Addict
Just a FYI inch per gallon is way past outdated. It's just something that won't go away.
The reason for the 125 is obviously for the school like you said. In a 55g they could stay in there for a while but 6 will eventually need all 125g of that. These loaches can live around 15 years and grow very slowly. Their full size is about 12-14 inches. There is very few fish we keep that do well in a 55g at that size and even then they are usually kept alone much less 3. Which isn't even a suitable school.
Just IMO to make sense of it all.
Caleb
The reason for the 125 is obviously for the school like you said. In a 55g they could stay in there for a while but 6 will eventually need all 125g of that. These loaches can live around 15 years and grow very slowly. Their full size is about 12-14 inches. There is very few fish we keep that do well in a 55g at that size and even then they are usually kept alone much less 3. Which isn't even a suitable school.
Just IMO to make sense of it all.
Caleb