Deficiency or Fish Bite Marks?

Captain Hook

Looking for ideas
Aug 21, 2003
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Toronto, ON
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My sunset hygro is looking like it's been eaten around the edges of some of the top leaves. I'm not sure if this is a nutrient deficiency or fish eating it. I haven't seen any fish nibbling on the plant but I also can't watch the tank 24/7.

I have seen these fish eat some plants, mainly stargrass. Fish in the tank are:

Ornate Rainbowfish
Rosy barbs
Siamese Algae Eater
Kribensis
Bristlenose (bushy) pleco
Rainbow shark

Any thoughts?
 
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