Fisheries resources exploitation is an open access business in Nigeria and the instrument or gear utilized come in various forms, sizes and shapes. The mesh sizes and gear types were investigated in riparian communities of Amassoma and Ogoubiri at Igbedi creek, Bayelsa State with the objectives to note the mesh sizes and gear types utilized in these communities. A total of 100 structured questionnaires was administered and retrieved from active fishers in the landing sites. Descriptive statistics such as simple percentage method, tables and charts were used to examine the mesh size and gear types utilized in the study area. The results obtained from the study revealed that the mesh sizes used ranges from 19 mm to 105 mm with a mean of 59.9±24.3 and 56.8±25.8 in Ogoubiri and Amassoma respectively. The types of gear recorded were gillnet (45.6%), cast net (7.7%), purse seine net (5.3%), beach seine net (14.7%), drift net (1.5%), hook and line (10.4%) and traps (14.8%). The length of nets utilized ranged from 68 m to 200 m at the study area. The study established that mesh sizes and gear types in use at the study area may lead to overexploitation of fish species in the study area. The survey of the mesh sizes and gear types used for fishing in riparian communities of Amassoma and Ogoubiri landing sites in Igbedi creek call for urgent need for intervention on the part of Government for policy review and implementation, so as to ensure sustainable use of the aquatic resources.

The recruitment pattern of Macrobrachium species at Igbedi Creek, Bayelsa State, Nigeria, were investigated to show if it can support optimum shrimp catch in the year 2020. The riparian settlements of Ogoubiri, Toruibeni, Amassoma and Otuan were chosen for this research. The result showed that there are three species in the Creek which were Macrobrachium macrobrachion, Macrobrachium vollenhovenii and Macrobrachium felicinum. Juveniles and ovigerous females were observed for all three species. The recruitment model in FiSAT II was utilized and the result showed that the percentage recruitment peak for Macrobrachium macrobrachion was 23.78% in the month of June while Macrobrachium vollenhovenii was 17.40% in the month of July. Recruitment peaks were recorded for both sexes in the months of March to September in all four locations and there was year-round recruitment for the both species. The species Macrobrachium felicinum was captured in the month of November with few catches. Male domination of females for Macrobrachium vollenhovenii and Macrobrachium felicinum were recorded. Therefore, this study recommend that optimum catch can be attained through closed season policies and further research on Macrobrachium species at Igbedi Creek.