Why is my bristlenose pleco at the top of the tank and not eating?

Question

Hello, We have a bristlenose pleco that we bought about two weeks ago and for the last 3 days he has been on top of the tank all day. he moves a little but spends most of the time on top by the water heater. he also hasnt eaten in the last 3 days... any idea why?

Angel Alvarado, LVT · Accepted Answer

Check the water temperature. This species does best between 68 F and 77 F. Low temps can affect appetite in fish. He may be near the heater for warmth. Check the water chemistry as well. Use a home test kit or submit a water sample for testing. Most pet stores will do this for free or for a small fee. Aim for 0 ppm ammonia and nitrites with a nitrate level of 20 ppm or less. Partial water changes can be done to stabilize chemistry if indicated. Use only aged or conditioned water that is temperature matched to prevent further stress or shock. If it is a "new" tank, there may not be enough food/algae on the bottom for it. Use sinking pellets or toss in some vegetables or greens. Be sure to remove any uneaten food after 24 hours to prevent it from fouling the water.

Why is my bristlenose pleco at the top of the tank and not eating?

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