Flowerhorn moved to a new tank and kok shrunk

[Biinguyen]

Hi guys I recently upgraded my tank for my flowerhorn. All water perimeters are good just like my old tank. His kok has slowly shrunk the last couple days, is he just trying to settle in the new tank? He has been in the new tank 4 days now. He's still very active and eating. The picture that I have attached is a comparison from Thursday and today. Thanks in advance.

 

[RajaVino]

He might be in the stress. Have u given the medicine for healing the stress? Is this ur new tank is also in the same location or new location? If its in new location, he may take some times to get relaxed with his new environment.

 

[duanes]

The hump is a water filled sack that relates to sense dominance, it is not a permanent structure.
If the tank is larger, it may feel less dominant, and so the hump shrinks.
Are there other fish in the tank that may challenge its dominance?

 

[Biinguyen]

The hump is a water filled sack that relates to sense dominance, it is not a permanent structure.
If the tank is larger, it may feel less dominant, and so the hump shrinks.
Are there other fish in the tank that may challenge its dominance?

Yes I upgraded the tank from a 40 to a 75. Looks like it's getting back fuller today. He is the only one in the tank.

 

[Biinguyen]

He might be in the stress. Have u given the medicine for healing the stress? Is this ur new tank is also in the same location or new location? If its in new location, he may take some times to get relaxed with his new environment.

No meds. All water perimeters are fine and he's still active doesn't look sick other then the kok shrunk a bit. Same location as well.

 

[RajaVino]

Have u given same food bro? Any diet changes?