Japanese fox sea fish porcupine is generally 50-100 yuan a piece. The dorsal fin is like a skirt, the color is bright, the tail fin is small, the temperament is gentle, and it is easy to raise. The rare red sword with needle tail: the tail fin has a needle-like tail, the needle tail is longer, the color is lighter, fierce, and not easy to raise.

The biggest feature of red swordfish is their sword tail. Female fish have no sword tail. Red swordfish is a common species in aquariums, and it is also an indispensable species.