Insights into the taxonomy and mitochondrial phylogenetic affinity of the longnose goby, Awaous jayakari (Teleostei: Gobiidae) Saud M. Al-JufailiHamid Reza EsmaeiliGolnaz Sayyadzadeh OriginalPaper 17 September 2021 Pages: 1177 - 1193
Metabolic growth hypothesis for the evolution of the nuchal hump in swordtail fishes Keith B. TompkinsMeggan S. LottMolly R. Morris OriginalPaper 06 October 2021 Pages: 1195 - 1206
Saltwater spawning grounds of sea-run brown trout (Salmo trutta) in tidal waters of a major Norwegian river Sven-Erik GabrielsenRobert J. LennoxBjørn T. Barlaup OriginalPaper Open access 27 September 2021 Pages: 1207 - 1213
Use of non-lethal endpoints to establish water quality requirements and optima of the endangered Topeka shiner (Notropis topeka) Rory T. MottAmanda E. RosenbergerDoug Novinger OriginalPaper Open access 04 October 2021 Pages: 1215 - 1233
Responses of fish communities to longitudinal thermal gradients in coldwater, lake outflow streams Nathan NozziRobert S. Stelzer OriginalPaper 20 September 2021 Pages: 1235 - 1249
Opportunistic spongivore fishes in a reef of Gulf of Mannar, India Jonathan Samuel EmmettK. Diraviya RajR. L. Laju OriginalPaper 28 September 2021 Pages: 1251 - 1262
The role of large, glaciated tributaries in cooling an important Pacific salmon migration corridor: a study of the Babine River Kara J. PitmanJonathan W. Moore OriginalPaper 01 October 2021 Pages: 1263 - 1277
Phylogenetically and morphologically close ambush piscivores can elicit different antipredatory responses in characid prey Taise M. LopesRafaela V. GranzottiLuiz C. Gomes OriginalPaper 02 October 2021 Pages: 1279 - 1292
Seasonal formation of annual rings on the scales of Baikal grayling inhabiting the middle reaches of the Yenisei River under altered temperature regime Ivan V. ZuevPavel Yu. AndrushchenkoTatiana A. Zotina OriginalPaper 27 September 2021 Pages: 1293 - 1302
Seasonal hydrology influences energy channels in food webs of rivers in the lower Okavango Delta Thethela BokhutloFriedrich W. KeppelerKirk O. Winemiller OriginalPaper 08 October 2021 Pages: 1303 - 1319
Diversity and longitudinal distribution of fishes in the Soto La Marina River basin, Mexico, and relationship with environmental variables Gorgonio Ruiz-CamposAna Verónica Martínez-VázquezFrancisco Javier García-De León OriginalPaper 01 October 2021 Pages: 1321 - 1339
Effect of a non-native freshwater goby invasion on spawning habitat use of two native freshwater gobies Sayaka ItoYoshinobu TamuraKoji Omori OriginalPaper 04 October 2021 Pages: 1341 - 1351
New records on intestinal eversion in a free-ranging nurse shark (Ginglymostoma cirratum) and a free-ranging, breaching-spotted eagle ray (Aetobatus narinari) Bianca S. RangelRenan VignoliVanessa B. Bettcher BriefCommunication 28 September 2021 Pages: 1353 - 1357