It's very pretty. I'm a little worried about the water flow though. I get the impression that there's a reasonably strong flow of water around that tank. Two things make me think that - the way the axolotl at the start is getting buffeted around, and also the pretty measly looking gill branches that the two axolotls have. I'm guessing that these axolotls have lived in the aquarium for something less than 6 months? It can take that long for water flow stress to overcome an axolotl and make it ill.
So I urge caution. Make sure the water flow isn't too strong (there are plenty of posts on here about that). And if I'm wrong in my guesses, then great!
