There are 1 1 year-old fish in the big sandbar near Newfoundland, and the spawning population is more male than female. The left and right egg sets of mature fish in the big sandbar off Newfoundland are extremely asymmetric, and the number of eggs conceived in the left dream is about 9 times that in the right ovary. There is a curve relationship between the egg tray and the body length, and a linear relationship between the pregnant child and the age. The length and age of the left ovary increased faster than that of the right ovary.

Hairy scale fish are distributed in a wide range of sea areas and only approach the coast for a short time in a year. Newfoundland waters began to approach the coast in April, and laid eggs from late June to mid-July. Spawning ranges from sandbars to four deep offshore waters. When the waves hit the beach, they are like hairy fish laying eggs. The water temperature is 2.8~ 10.7℃, the optimum range is 6.2~8.4℃, and the salinity range is very wide, 6.5~25.8. After the eggs are laid, they are attached to sand or stone, with the grain size range of 0.5~22mm for sand and 5~ 15mm for stone.