Glass surfing angelfish

[jdwmba88]

I have a 30 gal with mostly fish. All my levels are good and all my fish appear healthy. the tank has been running for 2.5 yrs. I've had this pygmy angelfish for approx 6 months and it seems to be doing fine. It eats well, isn't getting picked on or anything. But lately it has been constantly swimming back and forth along the side glass. It stops when I feed it but then goes right back to it. Is this something to be concerned about? It's a beautiful fish

 

[vetteguy53081]

A

I have a 30 gal with mostly fish. All my levels are good and all my fish appear healthy. the tank has been running for 2.5 yrs. I've had this pygmy angelfish for approx 6 months and it seems to be doing fine. It eats well, isn't getting picked on or anything. But lately it has been constantly swimming back and forth along the side glass. It stops when I feed it but then goes right back to it. Is this something to be concerned about? It's a beautiful fish

In many cases, they do this when they see their own reflection (similar to a dog discovering and chasing their own tail