No. The number of holes in abalone varies with species.
The shells of abalone have a series of spirally arranged protrusions that gradually increase from the top of the shell to the ventral surface. Some of these protrusions near the ends of the whorls are pierced with holes, and the number of holes varies with the species. There are 4 to 5 Panda abalone species distributed in northern China, and 7 to 9 Variegated Abalone species distributed in the south. In ancient my country, abalone was named "nine-hole snail" because of its characteristics.
Living habits:
Autumn is the season of faster growth, so you need to feed enough fresh food every 4 to 5 days. In winter, the water temperature is low, and the food intake of abalone is small. Fresh algae will not rot after being soaked in water for 7 to 8 days. Therefore, feeding can be done every 8 to 10 days in winter. Note that each feeding should be done after removing bait residues and abalone excrement and replacing it with fresh sea water.
Abalone likes dry young seaweed. If there is no fresh seaweed, the dried algae can be soaked and fed as bait. It is better to mix the algae with the algae. Among the algae, wakame and goose intestine are the best. Vegetables, kelp, horsetail, etc. are seaweeds that abalone prefers to eat. They have good bait effect and fast growth rate. The test results of seaweed, which is rich in local resources, are not ideal and have a great impact on the digestion of abalone.