The reproductive biology of from the Vietnamese Mekong Delta.

The Squaretail mullet, , is a commercial fish species distributed throughout the Indo-Pacific region. This species tolerates wide variations in salinity, having been reported from both freshwater and marine habitats. Although economically significant, there is little information on its reproduction, especially in the Vietnamese Mekong Delta (VMD), where it is heavily extracted.

The use of mtCOI gene sequences in identifying species in the Southwest of Vietnam.

genus is characterised by their small body size and morphological variability, allowing them to adapt to different habitats. This paper analyses the mitochondrial cytochrome C oxidase subunit I gene sequences and morphology of for identification purposes and to understand genetic relationships. The morphological characteristics of differed obviously from and .

The mismatch between morphological and molecular attribution of three Glossogobius species in the Mekong Delta.

Background: The Vietnamese Mekong Delta (VMD) is the granary for the whole country, providing animal and plant resources, especially fish. Among the fish species, the genus Glossogobius are the majority. Until now, research for this species has been solely relied on fish morphology for identification.

Population biology of (Quoy & Gaimard, 1825) in the Mekong Delta, Vietnam.

is widely distributed and plays a vital role in the fisheries in the Mekong Delta (MD), but data on its population biological traits have not been known. Consequently, this study was conducted to provide data on its population biology used for fishing status assessment and fish resources management. Fish specimens were collected using trawl nets in two regions of the Hau River mouth, including northern in Ben Tre and Tra Vinh (BTTV) and southern in Soc Trang and Bac Lieu (STBL).

Variations in length-weight relationship, growth and body condition of the commercial mullet in the Vietnamese Mekong Delta.

The Squaretail mullet is widely found from marine to brackish and freshwater, including the Vietnamese Mekong Delta (VMD). Data on the length-weight relationships (LWRs), growth pattern, and condition factor (CF) play an essential role in fisheries assessment but are limited to - a commercial fish in VMD. To better understand the growth pattern of this fish, the study collected samples at four sites, including Thanh Phu, Ben Tre (BT); Duyen Hai, Tra Vinh (TV); Tran De, Soc Trang (ST); and Dong Hai, Bac Lieu (BL).

Population dynamics of (Actinopteri: Gobiidae) in the Vietnamese Mekong Delta.

Spotted green goby is one of the commercial gobies living from brackish to freshwater globally, including the Southwest of Viet Nam, but there is no data on population biological traits used for assessing status of stock. Consequently, the research aimed to provide life history parameters of this fish like asymptotic length ( ), growth coefficient indicator (), exploitation rate (), length at first capture ( ), the maximum age ( ), growth coefficient ('), and mortalities. A total 960 individuals (528 males and 432 females) were caught using trawls at two ecoregions, including Tra Vinh-Soc Trang (TVST) and Bac Lieu-Ca Mau (BLCM), from January to December 2020.

Testicular development, reproducing references and length at first maturity of (Actinopteri: Gobiiformes) in the southwest Viet Nam.

This study provided knowledge on testicular development, spawning reference and length at first maturity ( ) of -a target catching fish for food supply in the southwest Viet Nam. A total of 528 individuals were collected using trawl nets from January to December 2020 at Long Huu-Tra Vinh (LHTV), Trung Binh-Soc Trang (TBST), Dien Hai-Bac Lieu (DHBL) and Tan Thuan-Ca Mau (TTCM). Five developmental stages of testis were found, and testis diameter increased from ∼1.

Feeding ecology of (Quoy & Gaimard, 1825) living in the Mekong Delta, Vietnam.

(squaretail mullet) adapts to a wide salt spectrum, grows quickly and is easy to raise with other species, so it is the object of attention in aquaculture. Information on the biology and ecology of the species, diet, in particular, is still scattered. Here, we explore the feeding habit, feeding intensity, and food composition of the squaretail mullet.

Ovarian development, spawning season, size at maturity and fecundity of (Valenciennes, 1837) in the Vietnamese Mekong Delta.

This present study provides an overview of the reproductive traits, including ovarian development, spawning season, size at maturity ( ), and fecundity of - a high economic value fish in the Vietnamese Mekong Delta (VMD). A total of 432 females were collected using trawl nets from January to December 2020 at four sites, including Long Huu-Tra Vinh (LHTV), Trung Binh-Soc Trang (TBST), Dien Hai-Bac Lieu (DHBL), and Tan Thuan-Ca Mau (TTCM). The ovarian diameter was seen to increase from 2.

Monthly variations in growth pattern and condition factor of (Gobiiformes: Periophthalminae) living along the Bassac River in Viet Nam.

(Hamilton, 1822) is a unique mudskipper living in the mudbanks from estuarine to riverine regions in the Vietnamese Mekong Delta (VMD), but there is no data on its growth patterns and condition factors that are helpful for fish resource assessment and adaptation understanding. This study was conducted at five sites, from the lower (Soc Trang province) to middle (Can Tho city) and upper (An Giang province) reaches of Bassac River in VMD, to provide knowledge on growth patterns and condition factors to this mudskippers. Fish samples were caught using traps and hands for 24 months, from July 2017 to June 2019, at these five sites.

Population biological traits of Bleeker, 1853 in the Vietnamese Mekong Delta.

is an amphibious fish living in mudflats from eastern India to Indonesia, including the Vietnamese Mekong Delta. Population biological traits play an important role in fishery assessment, but understanding is limited for this species. In total 1,031 specimens were caught in two regions covering four provinces, including the TVST (Duyen Hai, Tra Vinh and Tran De, Soc Trang) and BLCM (Dong Hai, Bac Lieu and Dam Doi, Ca Mau).

Ovarian and spawning reference, size at first maturity and fecundity of Glossogobius giuris caught along Vietnamese Mekong Delta.

This study investigates the ovarian development, spawning patterns, maturity size and fecundity of the goby -a commercial fish in the Vietnamese Mekong Delta-based on the data analysis of 659 individuals. Specimens were caught using trawl nets from four sites representing freshwater (Cai Rang, Can Tho) to salinized regions in the dry season (Long Phu, Soc Trang), and brackish water regions (Hoa Binh, Bac Lieu and Dam Doi, Ca Mau) over the 12 months of 2020. Histological analysis showed that it was a multi-spawner as different stages of oocytes appeared in mature ovaries.

Factors regulating growth pattern and condition factor of an amphibious fish living in the Mekong Delta.

Growth pattern and condition factor () are essential to fish resource assessment but limited to -an amphibious fish living in the mudflats along the Indo-Pacific regions, including the Mekong Delta (MD), Vietnam. This study lasted from April 2020 to March 2021 to verify if their growth pattern and change with sex, size, season, month and site. The total length and weight of 486 individuals (236 females and 250 males) were 2.

Reproduction ecology of an emerging fishery resource, the amphibious mudskipper , in the Mekong Delta.

Populations of , the Gold-spotted mudskipper, within the Mekong Delta are facing extirpation risks due to indiscriminate harvesting for the growing aquarium and food-fish trade. This study provides some of the first information on reproductive ecology-such as spawning type and season, length at first maturity, and batch fecundity-of this species, to be used in their management. The sex ratio of wild populations, based on 1031 individuals (523 males and 508 females) is 1:1.

Spatiotemporal variations in length-weight relationship, growth pattern and condition factor of Eggert, 1935 in Vietnamese Mekong Delta.

Length-weight relationship (), growth pattern and condition factor () play a vital role in fish resource evaluation and management but data on this is limited for . This is an amphibious fish that lives in the mudflats of the mangrove forests in the Western Pacific regions, including the Vietnamese Mekong Delta (VMD). This paper contributes to the understanding of the , growth pattern and of .