Black herring and grass carp are two similar fish, not the same fish. Although they all belong to CYPRINIDAE and live in fresh water, there are still many differences. For example, their colors are different. Black herring is mostly black, and grass carp is slightly lighter in color. For another example, they like to eat different foods. Although they are omnivores, herring likes to eat meat, while grass carp likes to be vegetarian. First, are herring and grass carp a kind of fish? Herring and grass carp are very common fish in China, belonging to one of the "Four Big Fish" in China. In terms of species, both herring and grass carp are teleost, CYPRINIDAE and CYPRINIDAE, which are similar in appearance. Judging from the living environment, herring and grass carp also live in fresh water. In China, they are all fish that can be farmed on a large scale. Although they have many similarities, it doesn't mean that they are the same fish. In fact, the difference between the two is quite big, which can be distinguished from many aspects.

2. What's the difference between herring and grass carp? 1. Family difference: Herring and grass carp belong to the CYPRINIDAE of teleost, but the genera are different. Herring belongs to the genus Herring and grass carp belongs to the genus Grass Carp, which are two different fish.

2. Color difference: There are some differences between herring and grass carp. The color of herring is mostly black, the back color is the strongest, and it looks lighter at the tail; Grass carp is slightly lighter in color, similar to soil green.

3. Habit differences: The habits of herring and grass carp are also different. For example, their eating habits are different. Grass carp is mainly vegetarian in adulthood, and grass is the staple food; Herring is an omnivore and likes to eat meat. In addition, the water layers they like to distribute are different. Black herring is distributed in the lower layer, and grass carp is distributed in the middle and lower layer.

4. Difference of fish scales: Careful observation reveals that the fish scales of herring and grass carp are also different. The scale area of herring is relatively large, and the arrangement is not particularly regular; Grass carp, on the other hand, has smaller scales, but the arrangement is relatively neat and regular.