Hello to everyone! Recently my parents have become interested in fish keeping since they see my brother's and my fish so often. I bought them a typical 20 long aquarium and gave them a list of fish they should research and look into. Sadly, when they were at the pet store they got interested in one of their Dojo Loaches. The guy at the pet store said it would be fine in a 20. They also bought 5 Kuhli Loaches because they said the people at the pet store said the kuhli loaches will make up for the lack of other dojos in the tank. I explained that he was either misinformed or lying, because a dojo can't fit in a 20 for too long. What should I do? Rehome it or keep it where it is are my only options. It is about 2" inches now- the same size as the kuhlis. They hang out with each other and seem fairly happy.