My goldfish gills are red and they won't eat. What should I do?

Goldfish owners sometimes become concerned when they notice a red color inside a their pet’s gills and think they are bleeding which is not actually the case. This is not usually cause for concern. It is really hard for me to say without seeing them. Can you repost your question with a photo? That might assist us in helping you better.

Not eating, however, is a huge problem. Environmental effects will alter a goldfish's eating patterns. These include unclean water, the presence of chlorine in its water, a dirty water filter or another dead fish in the tank with your goldfish. Check the water quality in your tank, making sure that you recently added water conditioner to your fish tank and the filter is working correctly. Look at the water in the tank, and check to make sure it is clear. Also look at the glass around your tank, checking to see if the glass is collecting stains or becoming discolored.

Goldfish react negatively to food that is no longer good. Check the expiration date on your fish food and make sure it is up to date. Also, check the conditions where you keep the food in conjunction with the instructions on your fish food. Some fish food requires you to keep it at a certain temperature or away from direct light. Keep your fish food stored in a safe place, noting the specific needs of the food.

If the fish are becoming ill this may reduce or eliminate the appetite. Look for symptoms of illness in your goldfish, such as any unnatural growths on its body, small white spots, raised scales or unnatural bloating. They may have inflamed gills, gills that flicker at an increased rate, bleeding on its body or rotting around its fins or gills. Look for behavioral changes, such as listless floating or constant hiding. If this is the case you may need to find a veterinarian to examine them.

I hope this helps. Best wishes!