Length‐weight relationships for some cryptobenthic reef fishes off Guarapari,southeastern Brazil

The present work provides length‐weight relationships for eight species of cryptobenthic reef fishes captured at natural and artificial environments on the southeastern Brazilian coast.     

Length–weight and length–length relationships for some Yangtze River fishes in Tian‐e‐zhou Oxbow,China

Length–weight and length–length relationships are reported for 32 fish species belonging to seven families and 26 genera from the Tian‐e‐zhou Oxbow in the middle reach of Yangtze River, near Shishou City, China. The weight (W) ‐ length (L) relationships were estimated using the logarithmic form of the equation W = aL^b. The exponent b varied from 2.60 to 3.65 (mean ± SE: 3.12 ± 0.25). The 14 weight–length relationships, 13 length–length relationships, and seven maximum lengths are presented to FishBase for the first time.     

Length–weight relationships for juvenile and small‐sized adult fishes of the surf zone

The present work provides length–weight relationships for 16 species captured in the surf zone of six sandy beaches near the mouth of the estuarine system of the Piraquê‐açú and Piraquê‐mirim rivers, southeastern Brazil.     

Length–weight relationships of sharks in Antalya Bay,eastern Mediterranean

Length–weight relationships are presented for ten shark species caught in the demersal trawl fishery in the Antalya Bay, eastern Mediterranean.     

Length–weight relationships for fishes caught by shrimp trawl in Santa Catarina coast,south Atlantic,Brazil

Length–weight relationships (TW = a TL^b) were estimated for fish species caught by bottom shrimp trawl north of Santa Catarina Island (Brazil) from October 2003 to September 2004. For three of the species this is the first LWR data in Brazil.     

Length–weight relationships of wild and farmed Tor putitora from Pakistan

Length–weight relationships (W = a TL^b) were estimated for wild and farmed Tor putitora obtained from River Korang, Islamabad and Attock District, Pakistan, respectively. The results indicate, W = 0.0171 TL^2.85 for wild and W = 0.1000 TL^2.33 for farmed. Total length ranged from 18.0 to 40.2 cm for male and 31.6 to 37.0 cm for female wild Tor putitora, indicating that the fish are now much smaller. The first reference of length–weight relationships for Tor putitora is provided.     

Length–weight relationships of 16 fish species from the Tarim River,China

This paper reports the length–weight relationships of 16 fish species belonging to three families and ten genera from the Tarim River in China. Length–weight relationships for ten fish species were unknown to Fishbase, and new maximum lengths are given for six species. The r² values ranged from 0.972 to 0.995. Values of b varied from 2.79 to 3.49.     

Length–weight and length–length relationships of fish species from the Chi River,northeastern Thailand

The relationships of total length (TL), fork length (FL) and standard length (SL) are presented for four fish species and the relationships between TL and wet weight for 23 fish species from the Chi River in northeastern Thailand. All length–length relationships were linear (r² > 0.95). Slope (b) of the length–weight relationships showed values between 2.5073 and 3.4896.     

Length–weight relationships of sixteen freshwater fishes from the Hacha River and its tributaries (Amazon Basin,Caquetá, Colombia)

Body length and weight relationships were estimated for sixteen native freshwater fish species (ten Characidae, three Loricariidae, two Heptapteridae and one Astroblepidae, mainly small‐sized fish) collected in the Andean piedmont Hacha River (Caquetá, Colombia) by electrofishing. These are the first length–weight and length–length parameters reported for the species, which are mostly endemic to the Amazonian basin. Maximum lengths in eight of the sixteen studied species are also reported. Knowledge of this biometric data and their relationships can be relevant in the management and conservation of the local fish and fisheries.     

Length–weight relationships of fishes collected from the Korangi‐Phitti Creek area (Indus delta,northern Arabian Sea)

Length–weight relationships of 41 fish species (20 families) collected from the Korangi‐Phitti Creek area on the northern side of the Indus delta at the northern Arabian Sea are presented. This study provides first reports of length–weight relationships for seven species (Sardinella brachysoma, Arius arius, Trachinotus mookalee, Nuchequula blochii, Gerres limbatus, Brachirus orientalis, and Synaptura commersonnii). The coefficients of determination (r²) were > 0.90 for 35 species. Estimates of b ranged from a minimum 2.204 for Liza carinata to a maximum of 3.535 for Pseudorhombus arsius; 16 species showed isometric growth (b = 3), eight species showed positive allometric growth (b > 3), while 17 species showed negative allometric growth (b < 3).     

Length–weight relationships for the family Triglidae in the Adriatic Sea,northeastern Mediterranean

Length–weight relationships were estimated for the first time for seven species of gurnards (Triglidae) based on data collected over the past 27 years in the Adriatic Sea (northeast Mediterranean). Results show significantly different relationships between juveniles and adults (females and males combined) for Aspitrigla cuculus, Eutrigla gurnardus, Chelidonichthys lucerna and Lepidotrigla cavillone. Isometric growth of juveniles is indicated for four species, allometric growth of adults for all species.     

Length–weight relationships for nine species of batoids from the Iskenderun Bay,Turkey

Presented are length–weight relationships for Rhinobatos rhinobatos, Rhinobatos cemiculus, Gymnura altevela, Dasyatis pastinaca, Rhinoptera marginata, Pteromylaeus bovinus, Torpedo nobiliana, Raja miraletus and Raja clavata captured by gillnet, longline and bottom trawl fishing between May 2010 and July 2011 off the east coast of Iskenderun Bay, Turkey.     

Length–weight relationships of some freshwater fishes of Iran

Length–weight relationships were estimated for 24 freshwater fish species of Iran. Significant length–weight relationships with high correlation coefficient were found for all species. The value of the parameter b varied between 2.881 and 3.545.     

Histochemical fibre types in the lateral muscle of fishes in fresh, brackish and salt water

The histochemical pattern of red, pink and white muscle of fish living in fresh, brackish, and salt water is reported. The muscle fibres were stained routinely during the year for lactate dehydrogenase (LDH), menadione α-glycerophosphate dehydrogenase (Mα—GPDH), succinic dehydrogenase (SDH), myosin adenosine triphosphatase (myosin ATPase), phosphorylase, lipids and glycogen. The pink and red muscles contain more glycogen and lipids and have a higher SDH activity, which is in accord with their aerobic metabolism and function in sustained swimming activity. The acid labile myosin ATPase activity characteristic of fast twitch fibres is present in the white fibres of most species, however in the white muscle of Gobius paganellus the enzyme activity is stable to both acid and alkali and, in addition, there is a scattered distribution of different fibre types in red and, especially, pink muscle. A study of seasonal variation patterns of myosin ATPase in white muscle of mugilidae over a period of two years has demonstrated, in late summer, the appearance of new small diameter fibres, with a high acid stable enzyme activity, that develop into the large diameter acid labile fibres.     

Length–weight relationships of 13 species from a flow regulated Balkan river

The length–weight relationships of 13 species from river Nestos (North Greece) were calculated in the present study, seven of which are presented for the first time. Significant length–weight relationships with high correlation coefficient were found for all species. The value of the parameter b varied between 2.36 and 3.27 (mean value ± SE: 3.05 ± 0.06).     

Length–weight,length–length relationships and feeding habits of wild Indus Mahseer,Tor macrolepis,from Attock,Pakistan

In this study the length–weight (LWR) and length–length relationships (LLR) were carried out for Indus Mahseer, Tor macrolepis, from the Haro River and Nalah Kala, Attock, Pakistan. A total of 118 specimens were used to estimate the relationship parameters. The results of LWR (W = a TL^b) from five different sites indicated W = 0.0044 TL^3.14, W = 0.0054 TL^3.08, W = 0.0059 TL^3.21, W = 0.0076 TL^3.12, and W = 0.0107 TL^2.99, respectively, with an overall value of W = 0.0100 TL^2.94. All regressions for LLR were highly significant (P ≤ 0.001), with coefficient of determination (r²) values of > 0.90. All relationships for LWR and LLR were found to be isometric. T. macrolepis is principally a herbivorous bottom feeder, mainly feeding on aquatic plants and algae, supplemented by insects.     

Length–weight relationships of nine fish species from Xingkai (Khanka) Lake,Heilongjiang, China

In this study the length–weight relationships of nine fish species from Xingkai (Khanka) Lake in China belonging to three families and eight genera were analyzed. A total of 273 specimens were used to estimate the relationship parameters. Four of these species (Chanodichthys dabryi, Hemibarbus maculatus, Tachysurus fulvidraco and Cyprinus carpio haematopterus) had no previous estimations and one maximum length is new to science for inclusion in FishBase.