Other commonly used fish include Alaska pollock, chub mackerel, sailfin sandfish, and Japanese anchovy. They then find a fast-talking sandfish, who leaves them with the name Souksoukville, then leaves. Tall body depth, though not as tall as the Pacific sandfish ("Trichodon trichodon"). Harvesting sandfish from the sea is known as trepanging in Indonesia. The belted sandfish ("Serranus subligarius") is a member of the family Serranidae. Sandfish themselves are preyed upon by Pacific cod and Pacific halibut. The sandfish has been eaten by man for over 1000 years. The sandfish inhabits shallow tropical waters, <20 m deep. Approximately 30-45 adult sandfish are required to start a small batch of spawning individuals. Holothuria scabra, or the sandfish, is a species of sea cucumber in the family Holothuriidae. The sandfish goes through 6 stages of growth before maturing into an adult. The sandfish has the same basic anatomy as most other species of sea cucumber. The sandfish is listed as an endangered with populations declining by the IUCN Red List.