Diaphonization -- otherwise known as clearing and staining -- is one of the most photogenic preparation methods used by research scientists. It's beautiful, but is it practical? We interviewed Dr. Caleb McMahan, Collection Manager of Fishes, on how he uses this technique to answer questions about the evolution of fish! Big thanks to Caleb for taking the time to share his work with us, and to Alan Resetar for lending the reptile and amphibian specimens!... as well as the extra light table because ours broke right before filming. :( Read more about Clearing and Staining Fishes
Blogs & Videos: Fishes
Wherein Isobel and Maria show us the ropes -- or nets -- for surveying fishes in the Amazon. The distribution of fish in tropical river systems is important to understanding how animals move around these waterways. Where there are big fish -- like the electric eel -- we know there must be an ample supply of prey species, too!
Read more about An Electric Eel and a Caiman
FMNH Fishes recently returned from our collecting expedition to Guatemala. Here are a few final photos from the trip. We will update again soon as we unpack our specimens and work to incorporate them into the Fish Collection at The Field Museum! susancaleb_tissue.jpg Susan and Caleb work on taking tissue samples from specimens after collecting at a site. Read more about Fishes in Guatemala - Last Update from the field
Access to internet while in the field can be pretty difficult - but here are some photos of our last several days of exploring fishes in Guatemala! Diego_castnet.jpg Diego Elias throws a cast net. Read more about Fishes in Guatemala - Photo Update!
We've just finished up doing work in some pretty remote areas (sorry we were unable to post a blog or photos lately!). Just a quick update - below are some of the fishes we've been collecting... dsc_0759.jpg Poecilia petenensis, from Lago Peten-Itza. Read more about Fishes in Guatemala - An Update
After making our way to El Remate, along the shore of Lago Peten-Itza, we settled and prepared to start our sampling of the region. We started the morning by collecting from the shore of the lake with cast nets and seines. We collected several cichlid species that were targets for some ichthyologists in the group, such as Thorichthys affinis, ‘Cichlasoma’ urophthalmum, Petenia splendida, and Paraneetroplus melanurus. Read more about Fishes in Guatemala - Peten II
After finishing up sampling several localities in the Coban-Rio Cahabon region, we began to head north in Guatemala to the Department of Peten. Peten is the largest department in Guatemala and possesses some of the largest lakes and rivers in the country. Read more about Fishes in Guatemala - Peten
After a couple of days filled with sorting out logistics, and driving away from Guatemala City, we have sampled at our first localities (Las Verapaces - Baja Verapaz and Alta Verapaz Departments). Our localities so far have centered around the Rio Escondido and Rio Cahabon, both north of Guatemala City. We found livebearing fishes of the family Poeciliidae (e.g. Pseudoxiphophorous spp., Poecilia mexicana), as well as cichlids, tetras, and catfish. Read more about Fishes in Guatemala: Las Verapaces
Next week our staff in Fishes at The Field Museum will be leaving the cold, snowy days of Chicago to study neotropical fishes in the Central American country of Guatemala! The Field Museum has always been an important institution for studying the biodiversity of fishes in the tropical rainforests of Mexico, Central America, and South America. On this expedition our Fishes staff will continue to build on our fish collections from the region so that we can answer even more questions. Read more about Fishes goes to Guatemala - Follow us in the field!
EMILY LAUREN RUDICK Sophomore Biology major at Temple University, College of Science and Technology REU Mentors: Dr. Rüdiger Bieler (Curator, Zoology, Invertebrates) and Dr. Ana Glavinic (Postdoctoral Fellow, Zoology, Invertebrates) Symposium Presentation Title: Comparative Gill and Labial Palp Morphology (Mollusca: Bivalvia) Read more about Comparative Gill and Labial Palp Morphology (Mollusca: Bivalvia)