The mullet
The blackfish is a middle-level fish in the aquarium. Because the blackfish is somewhat aggressive, if you keep it in a mixed tank, you must be careful not to keep it with small guinea fish to avoid fighting.
The mullet fish has a small adipose fin between the dorsal fin and tail fin, and has teeth in its mouth. The fins of this fish are red, and there is a red cross mark at the base of the tail fin, hence the name red cross fish. A very good fish to raise and a good training fish for aquarium beginners. It can withstand low temperatures of 18 degrees, likes to exercise, and will travel in groups when the space is large. Fish have various characteristics, some are fierce and some are relatively weak.
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