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Felipe Araújo @felipearaujoictio.bsky.social · 21/07/2026

Environmental alteration plays a pivotal role in the genetic erosion of endemic rapid-dwelling freshwater catfishes in the Amazon basin. Learn more at: doi.org/10.1590/1982-0… #fish #populationgenomics #Amazon

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Felipe Araújo @felipearaujoictio.bsky.social · 01/05/2026

In the Rio Trombetas rapids (Brazil), Siluriformes dominate and new records reveal hidden diversity. A proposed dam could flood one of the Amazon’s last natural rapid systems. Protected today. Uncertain tomorrow. 🐟 More info on: doi.org/10.11606/180... #fish #conservationbiology

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Felipe Araújo @felipearaujoictio.bsky.social · 01/09/2025

Fish deformities are commonly observed in farmed or non-native species. Here, we report for the first time a pughead deformity in a wild specimen of Satanoperca jurupari from the Tocantins River, within the Amazon basin. 👉 www.alb.periodikos.com.br/article/doi/...

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Felipe Araújo @felipearaujoictio.bsky.social · 07/06/2025

We have collected this discus fish that seems to present some head deformity. Can anyone agree with me about it?

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Reposted by Felipe Araújo

Michelle Wille @duckswabber.bsky.social · 27/01/2025

Between 2019 and 2023, researchers paid $8.968 billion to make papers open access. Imagine what else could be done with this money if it wasnt paid to for profit publishing companies... 👉 arxiv.org/abs/2407.16551

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Felipe Araújo @felipearaujoictio.bsky.social · 15/03/2025

I'm happy to share my research published on Biota Neotropica. Rapids in the Tocantins-Araguaia Basin host a rich fish diversity adapted to strong currents. Despite hydroelectric impacts, these habitats remain crucial for the survival of species. #Fish #Conservation scielo.br/j/bn/a/PJwBM... #Fish

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Felipe Araújo @felipearaujoictio.bsky.social · 09/03/2025

This armored catfish seems to be a putative new species of Peckoltia. It resembles Peckoltia vittata but it misses the fully platted abdomen. What do you think?

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Felipe Araújo @felipearaujoictio.bsky.social · 28/02/2025

Fish collecting in the rapids of the Tocantins River.

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Felipe Araújo @felipearaujoictio.bsky.social · 25/02/2025

Gonatodes tapajonicus, collected near São Luiz do Tapajós by my fellow herpetologists in a multidisciplinary field expedition that happened in October of 2023.

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Reposted by Felipe Araújo

Observatório do Clima @obsclima.bsky.social · 20/01/2025

Mostrando que não há limites para o vira-latismo e que não pode ver uma vergonha na rua que já quer passar, @helderbarbalhoreal.bsky.social, o anfitrião da #COP30, saúda a posse do criminoso condenado que quer assassinar o Acordo de Paris. www.poder360.com.br/poder-susten...

poder360.com.br

Helder Barbalho celebra posse de Trump e o convida para a COP30

Governador do Pará disse esperar “contar com a presença” do republicando na conferência climática em novembro. Leia no Poder360

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Felipe Araújo @felipearaujoictio.bsky.social · 19/12/2024

Here is an intriguing specimen of Ghost Pleco (Ancistomus snethlageae) showing a dark band along the dorsal and caudal fins instead of the diagnostic white bands on the fins. Could you have a hypothesis for it?

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Reposted by Felipe Araújo

James Albert @gymnotus.bsky.social · 12/12/2024

PDF is now available at: www.frontiersin.org/journals/bio...

frontiersin.org

Frontiers | Time-calibrated phylogeny of neotropical freshwater fishes

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Felipe Araújo @felipearaujoictio.bsky.social · 03/12/2024

What amazing Baryancistrus aff niveatus we caught in the Trombetas rapids.

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Felipe Araújo @felipearaujoictio.bsky.social · 26/11/2024

The Tocantins toadfish, Potamobatrachus trispinosus, is one of the rarest fish species in Brazil. Since its discovery by Collette in 1995 was only known from its type locality, which was tragically submerged by the Tucurui Hydroelectric Dam. #TeamFish, #FishSci, #Fish, #Ichthyology

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Reposted by Felipe Araújo

Jon Lim, FRCP PhD @drjonlim.bsky.social · 23/11/2024

🎨 In case anyone need… The NIH BioArt Source is an awesome library of *free* professionally drawn illustrations for scientific presentations or figures. Downloadable in HD. Thank you NIH for this invaluable tool 🙏! Check it out 👇 bioart.niaid.nih.gov

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Reposted by Felipe Araújo

Dr Vincent Raoult @sawsharkman.bsky.social · 24/11/2024

Well this explains why Angel sharks are one of the most threatened shark species: genetics show very isolated populations despite neighbouring islands, with deep oceans likely acting as barriers to gene transfer. Means protecting just one population won't work link.springer.com/article/10.1...

link.springer.com

Distinct management units for the Critically Endangered angelshark (Squatina squatina) revealed in the Canary Islands - Conservation Genetics

The angelshark, Squatina squatina, is listed as Critically Endangered on the IUCN Red List of Threatened Species, and remaining populations are highly fragmented throughout its historical distribution...

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Felipe Araújo @felipearaujoictio.bsky.social · 23/11/2024

My paper of the description of Hypancistrus parkateje was divulged in the Miami Herald. www.miamiherald.com/news/nation-... #fish, #fishnews

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Felipe Araújo @felipearaujoictio.bsky.social · 21/11/2024

Mouth details of Leporacanthicus joselimai, a threatened species of Brazilian freshwater. #TeamFish, #FishSci, #Fish, #Ichthyology

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Reposted by Felipe Araújo

James Albert @gymnotus.bsky.social · 20/11/2024

New paper alert: A time-calibrated phylogeny of Neotropical freshwater fishes, the most diverse continental fauna on Earth. Built from a supermatrix of 51 genomic markers for 3,167 species, the most species-rich phylogeny of this fauna to date. frontiersin.org/journals/bio...

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Felipe Araújo @felipearaujoictio.bsky.social · 14/11/2024

My first species description was published last week in Journal of Fish Biology. We expanded Hypancistrus's distribution to the Tocantins watershed, presenting multilocus phylogeny and CT-scan images to support taxonomic positioning. Find out more at: doi.org/10.1111/jfb....

doi.org

A new species of Hypancistrus Isbrücker & Nijssen 1991 (Loricariidae, Siluriformes) from the rapids of the middle Rio Tocantins

The Hypancistrus genus is recognized in the Río Orinoco basin and Rio Xingu in the Guiana and Brazilian Shields, respectively. Some of its species are important in ornamental fishing. Despite this si...

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Felipe Araújo @felipearaujoictio.bsky.social · 20/09/2024

There are any fish researchers up here?

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