I read somewhere that when young, Kuhli loaches can die from loneliness if they don't have another one of their species. Is this true? (I have 2 swordtails, 1 platy, and 1 Kuhli in a 10G)
How about one more? The there will be too since they are social. Wouldn't put 6 in a 10g 2 would be ok and they would be happier.
Their bioload is not so much. Also, while it wouldn't be the happiest Khuli loach, fish don;t normally die for reasons like loneliness. Stress would be the reason.