Home > Crops & Livestock > Aquaculture > Crawfish > Harvesting > Crawfish Aquaculture Terminology [Image: Crawfish Aquaculture Terminology ] This glossary was developed to provide a better understanding of many of the terms used in the crawfish production manual. This document is the Glossary in the Louisiana Crawfish Production Manual. Harvest [Image: Harvest] In Louisiana, two-thirds of the crawfish crop is generally harvested from March through June, when densities are highest and crawfish are most active. More than half of all production expenses are associated with harvest. Efficient harvesting is essential for crawfish farming profitability. This document is Chapter 8 in the Louisiana Crawfish Production Manual. Crawfish Farmers Get Tips, Information For New Season (Distributed 11/08/07) Harvesting is the most expensive part of producing crawfish, so reducing that cost can mean the difference between profit and loss, according to Dr. Robert Romaire, LSU AgCenter aquaculture specialist, who spoke at the 2007 Crawfish Farmers Association 2007 Expo. Improved Crawfish Trap Design Might Mean Fewer Traps Needed [Image: Square mesh traps] Over the last several years, crawfish farmers have been switching to a slightly different crawfish trap – one constructed of ¾-inch square mesh wire in lieu of those made from ¾-inch hexagonal (6-sided) mesh. The square mesh traps are more durable and produce larger catches.  more articles... Crawfish Production: Harvesting [Image: Publication cover] Freshwater crawfish of the genus Procambarus are a valuable aquaculture commodity in the southern United States, with annual production of 30 to 50 million pounds and farm-gatevalues of $25 to 50 million. Unlike fishes, crawfish are not harvested by seining. Instead, crawfish are harvested with a passive system that uses baited traps.