A Phylogenomic Perspective on the New Era of Ichthyology
With more than 24,000 extant species, the Actinopterygii is the most diverse group of vertebrates. This astonishing diversity represents not only an underexploited resource for research focused on these fishes but also a source of valuable information for comparative biology and medical science. Although the technical advances in morphology concomitant with revolutionary phylogenetic concepts have presented many challenges in ichthyology for the past half-century, spectacular progress in DNA technology provides other opportunities for research using multiple-gene or genomic data for the study of biological questions, particularly those related to the evolution of fishes. In this article, we discuss how ichthyology is changing in this new era, and how the emerging phylogenomic approach has been used to study species diversification in relation to gene and genome duplications and to resolve the complex evolutionary history of ray-finned fishes. 
Integrated ichnology and ichthyology of the Oligocene Menilite Formation, Skole and Subsilesian nappes, Polish Carpathians: A proxy to oxygenation history
The anoxic, mostly black or brown fine-grained sediments of the Menilite Formation (Oligocene–Early Miocene) in the Skole and Subsilesian nappes contain thin layers of bioturbated green or grey-green mudstones, some of which contain the trace fossils Halimedides annulata, Multina isp., Palaeophycus ?tubularis, ?Planolites isp., Rhizocorallium isp., Trichichnus isp. and Zoophycos isp. The Trichichnus–Palaeophycus–(Multina, Halimedides)–Rhizocorallium suite indicates an increase in oxygenation of sediments. The contribution of different ecological groups of fishes, including epipelagic, bathypelagic, benthopelagic, neritic and reef, and demersal taxa changes significantly through the Menilite Formation. The absence or reduction of bathypelagic fishes points to anoxia in the water column. The combination of ichnological and ichthyological data and incorporation of data on benthic foraminifers allowed a reconstruction of oxygenation changes in the sediment and water column during deposition of the Menilite Formation. Total anoxia at the sea floor and in the water column, attributed to a combination of thermo-stratification and extremely high organic productivity, occurred only during the period reflected by ichthyofaunal Zone IPM2 (middle part of the NP23 Zone). Anoxia restricted to the basin floor or upper slope, related in part to upwelling, occurred during sedimentation of the upper part of the Menilite Formation. 
How far has Neotropical Ichthyology progressed in twenty years?
Studies on the diversity, taxonomy, phylogeny, and biogeography of Neotropical Fishes have thrived over the twenty years that have elapsed since the first symposium on their phylogeny and classification in Porto Alegre, Brazil. Here, we review recent advances in the study of Neotropical fishes and assess the known diversity of freshwater species in that region. 6,255 valid freshwater species have been discovered in the Neotropics so far, and we estimate that over 9,000 species will be known when the inventory is complete. We also summarize the events of the second Symposium on Phylogeny and Classification of Neotropical Fishes that took place last year in Londrina, Brazil. Along with invited talks on the biodiversity of all major groups of Neotropical fishes, a series of presentations on the development of fish collections, and numerous contributed talks, the meeting included a special session to honor Dr. Richard Vari, who was one of the most prolific and beloved members of our community. 
Monthly Frequency Occurrence, Sex-ratio, Length-weight Relationship and Condition Factor of Native Fishes Caught in a Tropical Floodplain Rivers of Cameroon, Central Africa
Aims: To evaluate the aquaculture potential of the native fishes from the Mbô Floodplain (MF) Rivers for their domestication and preservation the genetic diversity.
Study Design: Descriptive research.
Place and Duration of Study: Laboratory of Applied Ichthyology and Hydrobiology, Department of Animal Productions, Faculty of Agronomy and Agricultural Sciences, the University of Dschang-Cameroon, between October 2008 and October 2009.
Methodology:A total of 449 fishes measured 11.50 to 50.50cm (mean: 24.60±5.70 SDcm) total length (TL) and 8 to 1300g (mean: 169.18±111.01 SDg) total weight (W), were used for the analysis. Taxonomic identification was performed. The TL and the W were measured using an ichtyometer and electronic balance respectively. The sex of the fish was determined by macroscopic examination of genital papilla or the gonads after dissection. Fishes were counted by species, sexes and months. For data analysis, descriptive statistics, Chi-square test, t-test, general linear model, and the statistical significance of r2 were performed using SPSS 20.0 software at 5% and 1% significance levels.
Results: Four families with four species were determined: Clariidae (Clarias jaensis), Cyprinidae (Labeo camerunensis and Labeobarbus batesii), Cichlidae (Tilapia camerunensis). All fish species were a higher size. The allometry coefficient b ranged from 2.01 (Labeo camerunensis) to 3.12 (C. jaensis) (mean=2.58±0.50 SD). All species sampled have more females than males indicate the number of both females and males for possible relative sex percentages. Fish species shows positive and negative allometric growth. The higher K factor was recorded in the Cichlidae family and the lower in Clariidae. However the majority of fish species showed a good well-being.
Conclusion:All fish species show a positive aquaculture potential. Then they could be domesticated and preserved genetic diversity. This study, however, need further work to validate reliability. 
Feeding Habits of the African Carp Labeobarbus batesii (Pisces: Cyprinidae) from the Mbô Floodplain Rivers
Aims: The African cyprinids were not yet used in aquaculture. For domestication and preservation of the African carp Labeobarbus batesii, aspects of feeding habits in term of its aquaculture potential proves necessary.
Place and Duration of Study: Laboratory of Applied Ichthyology and Hydrobiology, Department of Animal Productions, Faculty of Agronomy and Agricultural Sciences, University of Dschang, Cameroon, from May 2008 to October 2009.
Methodology: 318 fish samples (17 cm to 93.70 cm, means 25.47±4.47 cm of total length; 40 g to 6000 g, means 187.41±125.69 g for total weight) were collected monthly from artisanal fishermen in the Mbô Floodplain Rivers (MF). After fish’s dissection, guts were immediately removed and dissected, empty and replete guts were counted. Food items were identified to lowest possible taxon. They were counted under a stereoscopic binocular microscope in petri dishes. The microscopic food organisms were examined under a light microscope and the identified organisms were counted using Thoma lam. Three indices were used for gut contents analysis: Gut vacuity index, Frequency of occurrence and Percentage of abundance. Descriptive statistics, analysis of variance (ANOVA) and the generalized linear model at P = 0.05 and P = 0.001 probability level were used.
Results: Gut vacuity index was very low (11.95 %), and varied between seasons, zones, sexes and maturity state. Seven taxonomic groups were observed in L. batesii guts: plant foods (macrophyta and algae) are predominant both in frequency and abundance in the diet than animal foods (insects, Crustaceans, Nematoda, Protozoa and other invertebrates).
Conclusion: Labeobarbus batesii consumes many varieties of animal and plant organisms. This species is benthopelagic, detritivorous and omnivorous with a preference for plant material. 
 Chen, W.J. and Mayden, R.L., 2010. A phylogenomic perspective on the new era of ichthyology. Bioscience, 60(6), pp.421-432.
 Kotlarczyk, J. and Uchman, A., 2012. Integrated ichnology and ichthyology of the Oligocene Menilite Formation, Skole and Subsilesian nappes, Polish Carpathians: A proxy to oxygenation history. Palaeogeography, Palaeoclimatology, Palaeoecology, 331, pp.104-118.
 Birindelli, J.L. and Sidlauskas, B.L., 2018. Preface: How far has Neotropical Ichthyology progressed in twenty years?. Neotropical Ichthyology, 16.
 Tiogué, C.T., Zango, P., Efolé, T.E., Kenfack, M., Tekwombuo, J., Tekou, G., Domwa, M., Tomedi, M.T.E. and Tchoumboué, J., 2014. Monthly frequency occurrence, sex-ratio, length-weight relationship and condition factor of native fishes caught in a tropical floodplain rivers of Cameroon, Central Africa. Journal of Scientific Research and Reports, pp.2864-2874.
 Tiogué, C.T., Tomedi, M.T.E., Nguenga, D., Tekou, G. and Tchoumboué, J., 2014. Feeding Habits of the African Carp Labeobarbus batesii (Pisces: Cyprinidae) from the Mbô Floodplain Rivers. Advances in Research, pp.757-765.