Length‐weight relationships of seven fish species from Amazonian Equatorial coast,Brazil

Parameters of the length‐weight relationship (LWR) were estimated for seven fish species from Amazonian Equatorial coast of Maranhão, Brazil. Samplings were carried out in three sample points of the lower stretch of the Itapecuru River (2°57'6.2"S and 44°14'26.5"W; 3°0'33.0"S and 44°15'54.7"W; 3°3'42.9"S and 44°15'1"W). The specimens were caught quarterly from June 2012 to August 2014 using monofilament gillnets (10, 20, 30, 40, 50, 60, 70 and 80 mm between knots) from 10 m to 30 m long and 4 m to 6 m high. This study provides the LWR parameters for Schizodon dissimilis, Curimata macrops, Prochilodus lacustris, Geophagus surinamensis, Hassar affinis, Platydoras brachylecis and Hypostomus plecostomus.     

Length‐weight relationships for 15 fish species from Atlantic rain forest streams,southeastern Brazil

Length‐weight relationships were determined for 15 fish species from the tributary Atlantic rain forest steams that drain into Sepetiba Bay, southeastern Brazil. This is the first record of length‐weight relationships for 12 of these species and new maximum lengths for four species. These results will be useful for management and conservation of this area of the Atlantic rain forest drainages.     

Length–weight relationships of 23 fish species from Southeastern Brazil

Length–weight relationships of 23 fish species from the Guaratiba mangrove area in southeastern Brazil were estimated. The value of the parameter b ranged from 2.63 to 3.39 (median = 2.97). This study presents the first estimation of LWR for two species (Ctenogobius stomatus and Ctenogobius boleosoma). New maximum length records were obtained for two species (Poecilla vivipara and Ctenogobius stomatus).     

Length‐weight relationships of seven fish species from Jequitinhonha River basin,southeastern Brazil

The present study established the length‐weight relationships (LWR) for seven fish species from Jequitinhonha River basin, a Brazilian coastal drainage, collected with gillnets (3 to 16 cm) between 2011 and 2016. For the LWR, standard length and total weight were used. The allometric coefficient b varied from 2.66 to 3.26. These results provide biological data for a region of extreme biogeographical importance that is suffering serious environmental disturbances.     

Length–weight relationships for eight fish species from the Pearl River Delta,China

Length–weight relationships (LWRs) were estimated for eight native fish species collected in the lower reaches of the Pearl River, Guangdong Province, South China. Fish were sampled in March and September 2014 and January 2015, using gillnets with various mesh sizes (5–8 cm) and trawl nets with a 3 cm mesh size. A total of 568 specimens of the eight species were analyzed. The r² values for these species ranged from 0.951 to 0.991. The b values ranged from 3.00 for Takifugu ocellatus and Moolgarda cunnesius, to 3.57 for Clupanodon thrissa. New maximum total lengths are recorded for Takifugu ocellatus (17.6 cm) and Liza carinata (24.4 cm). For five species (Clupanodon thrissa, Megalobrama terminalis, Collichthys lucidus, Coilia grayii, Takifugu ocellatus), the LWRs are presented to fishbase for the first time.     

Length–weight relationships for 19 headwater fish species from streams in the Sinos River basin,southern Brazil

This study reports the length–weight relationship estimates (LWRs) for 19 fish species inhabiting low order headwater streams in the Sinos River basin of southern Brazil. Between 2010 and 2014, 19 species at 47 sites were sampled in 10 sub‐basins by electrofishing in winter and summer. For two species, Bryconamericus iheringii and Phalloceros caudimaculatus, the estimates in this study offer new maximum size ranges compared to previous studies.     

Length‐weight relationships for five freshwater fish species from the Utinga State Park,Northeast Amazon,Brazil

Length–weight relationships (LWR) were estimated for five most abundant fish species occurring in the Utinga State Park within the metropolitan area of Belém, State of Pará, Northern Brazil. Data were obtained from specimens of Curimata knerii (n = 75), Gasteropelecus levis (n = 54), Hemigrammus rodwayi (n = 82), Hyphessobrycon bentosi (n = 69), and Pristobrycon calmoni (n = 76) collected in July 2013 with seines (1.5 mm mesh), sieves (1 mm mesh), and gill nets (40–120 mm mesh) in the main waterbodies. All LWRs are novel for science, increasing knowledge on biological information of the Neotropical freshwater fish.     

Length‐weight relationships of 19 fish species from the Saemangeum Reservoir in South Korea

The length‐weight relationships were analysed for 19 species classified into nine families from the Saemangeum reservoir, South Korea. The sample size ranged from 12 individuals for Silurus asotus and Micropterus salmoides to 548 for Liza haematocheila. Six species have no length‐weight information in FishBase.     

Length‐weight relationships of six fish species from São Marcos Bay,Northeastern Brazil

Length‐weight relationship parameters were calculated for six fish species from São Marcos Bay, in Northeast Brazil (the segment between 02°35′55″S and 44°20′58″W; 02°34′53″S and 44°21′48″W; 02º42′25″S and 44º26′46″W). The specimens were caught quarterly from April 2010 to February 2013, using monofilament gillnets (2, 4 and 6 cm between knots) from 100 m to 3,000 m long and 4 m to 6 m high. The present study covers a much wider size range for four species and adds new information for the maximum length of Notarius bonillai.     

Length–weight relationships for freshwater fish species from the Pantanal of the Negro River,Brazil

The present study describes the length‐weight relationships (LWRs) of 28 species captured in Santa Virgínia Bay, in the Pantanal of the Negro River, Mato Grosso do Sul State, Brazil, over 3 years (1999 to 2001). The study provides the first references on LWRs for thirteen of these species.     

Length‐weight relationships of three estuarine fish species from Bangladesh

The length‐weight relationships (LWRs) of three fish species; Toxotes chatareus (Hamilton, 1822), Datnioides polota (Hamilton, 1822), and Chela cachius (Hamilton, 1822) collected between September 2016 and August 2017 from Tentulia estuary of Bangladesh were analyzed. Fish were caught seasonally using set bag net and cast net with mesh size of 0.5 cm and < 0.5 cm, respectively. LWRs of Toxotes chatareus, Datnioides polota and Chela cachius were calculated as W = 0.0154L^2.926 (r² = .962), W = 0.0149L^3.106 (r² = .992) and W = 0.0109L^2.968 (r² = .981), respectively. The study provides a new maximum total length for Chela cachius.     

Length‐weight relationships of dominant fish species from Caxiuanã National Forest,Eastern Amazon,Brazil

The present work presents parameters of the length–weight relationships (LWR) for 12 species of freshwater fish from rivers within the Caxiuanã National Forest, Eastern Amazon. Data coverage include the main taxonomic groups in the sampling area: Characiformes: Acestrorhynchidae, Anostomidae, Curimaridae, Erythrinidae, Hemiodontidae; Siluriformes: Auchenipteridae; Perciformes: Sciaenidae. LWR parameters are estimated for the first time for five species: Leporinus affinis, Bryconops melanurus, Pygopristis denticulata, Serrasalmus gouldingi and Triportheus albus. Relative growth patterns were evenly distributed among species, one‐third showing negative allometry (b < 3; n = 4), isometry (b = 3; n = 4) or positive allometry (b > 3; n = 4).     

Length‐weight relationships of three freshwater fish species from the Cujubim Sustainable Development Reserve,Amazonas, Brazil

Length–weight relationships (LWR) were provided for three fish species from Cujubim Sustainable Development Reserve, drainages of the Jutaí River Basin, a tributary of the Solimões River, part of the Central Amazon Biodiversity Corridor, Amazonas, Region North of Brazil. Specimens were collected in March 2006 using gill nets with mesh sizes range between 2 and 18 cm. The LWRs for all species are provided by the first time, and two new maximum length are recorded.     

Length‐weight relationships of 14 fish species from a lowland tropical reservoir in southeastern Brazil

The present work reports the length‐weight relationships of 14 abundant fish species from a tropical reservoir (Juturnaiba Reservoir), which is the water supply for several municipalities in the northern Rio de Janeiro State, southeastern Brazil. Fishes were collected quarterly in 2006 and 2007 using gillnets of different mesh sizes (15–120 mm stretched mesh) that were set up at sunset and retrieved the following morning, remaining for ca. 15 h. Of the 14 species, eight had no records in the FishBase LWR database; new maximum lengths are given for eight species.     

Length‐weight relationships of four fish species from Visakhapatnam coast,India

Length‐weight relationships (LWRs) were determined for 4 deep water fish species from Visakhapatnam coast, India. Specimens were collected fortnightly between December 2013 and November 2015 from commercial trawls at Visakhapatnam fish landing centre (16.98°N–20.2°N, Long.82.19°–86.53°E). Individuals were captured between 100 and 300 m depth with shrimp trawl net (head rope length: 37–46 m and cod end mesh size: 30–40 mm). Total length (TL) (nearest to 0.1 cm) and body weights (nearest to 0.1 g) were taken each individual. All LWRs were significant with r² values ranged from 0.958 for Uranoscopus bicinctus Temminkc & Schlegel, 1843 to 0.983 for Uranoscopus chinensis Guichenot, 1882 and “b” values ranged from 2.832 for U. bicinctus to 3. 402 Synodus indicus (Day, 1873).This study provides a new maximum length data for three species (Uranoscopus bicinctus Temminkc & Schlegel, 1843; Uranoscopus chinensis Guichenot, 1882 and Uranoscopus marmoratus Cuvier, 1829).     

Length–weight relationships for 85 fish species from Guam

Length–weight relationships (LWRs) were developed for 85 reef and bottom‐fish species from Guam. These are the first published LWRs for Guam, and include new LWRs for nine species lacking these relationships in FishBase.     

Length‐weight relationships of four fish species from the Yellow River,China

Length‐weight relationships (LWRs) were estimated for four fish species [Schizopygopsis anteroventris Wu & Tsao, 1989, Schizothorax lissolabiatus Tsao, 1964, Triplophysa markehenensis (Zhu & Wu, 1981) and Triplophysa siluroides (Herzenstein, 1888)] from the Yellow River. Samples were collected seasonally from August 2016 to October 2017, using various fishing gears [set nets (mesh: 1.5 cm × 2.0 cm), hook, drift gill nets (mesh: 1.0 cm × 2.0 cm × 3.0 cm) and electro fishing]. Four new maximum standard length were recorded for S. anteroventris, S. lissolabiatus, T. markehenensis and T. siluroides.     

Length‐weight relationships of 77 fish species from the Chishui River,China

Length‐weight relationships are described for 77 fish species belonging to eight families and 56 genera from the Chishui River, a protected tributary of the upper Yangtze River, China. Length–weight relationships for 56 species were unknown to FishBase and new maximum lengths are recorded for 44 species. These results will be useful for fishery research, management and conservation in the upper Yangtze River Basin.     

Length‐weight relationships of five fish species from the Hongshui River,China

The length‐weight relationships (LWRs) were determined for five Chinese endemic fish species caught by electrofishing, cast nets (mesh size 1 cm) and gillnets (mesh size 4 cm) in the Hongshui River during June and July 2011 and October to November 2012. These are the first LWRs records for these five little‐known species.