In the last few days one of my angelfish has developed dark, slightly sunken spots behind his eyes. The spots are about the same size as his eyes.
Any one know what the problem might be?
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Tank parameters: 79 degrees, 0ppm ammonia, 0ppm nitrite, 15ppm nitrate, 7.6 ph, 29 gallon tank.
The tank has been set up for about 4 months. I haven't added anything new to the tank for about 2 months.
The angelfish isn't acting unsual or anything like that. He seems to be eating normally.
Any one know what the problem might be?
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Tank parameters: 79 degrees, 0ppm ammonia, 0ppm nitrite, 15ppm nitrate, 7.6 ph, 29 gallon tank.
The tank has been set up for about 4 months. I haven't added anything new to the tank for about 2 months.
The angelfish isn't acting unsual or anything like that. He seems to be eating normally.