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Twitching in Oscar fish can be a sign of dominance or aggression. Shaking the tail and/or lower body part also indicate courtship display. Or it could be just that your Oscar is seeing its own reflection or has swallowed something that’s causing a blockage, resulting in twitching.
If your Oscar fish is turning gray, highly likely, it is experiencing stress or is frightened. It can be due to increasing ammonia or nitrite levels, fluctuation in temperature, incorrect pH levels, an overstocked tank, fish bullying, and being introduced to a new environment.
If your Oscar fish is leaning quite heavily on its side, it can be due to stress, higher ammonia or nitrite levels, pH imbalance, temperature swings, swim
If you are planning to get an Oscar fish one question that may arise is: What size tank is best suited for Oscar fish?
However, keeping Oscar alone in a tank can be quite dull. So what can you do? Well, introducing tank mates for Oscar fish can help.
