Gutting a fish 101

PeerTube

New research reports the foraging association between the piscivorous Japanese #amberjack (Seriola quinqueradiata) and the zoobenthivorous Asian sheephead #wrasse (Semicossyphus reticulatus): doi.org/10.1111/jfb.70140 #JFB

http://doi.org/10.1111/jfb.70140

Hawaiian Word of the Day: August 13th

Our Hawaiian Word for today is a beautiful Oʻahu place name, Kaʻaʻawa. It is often used as an example of a Hawaiian word with so many vowels in a row. But if you spell and pronounce it correctly, you will note that every vowel is separated by a consonant sound, the glottal stop or ʻokina. And it means the wrasse fish.

HAWAII
East Atlantic peacock wrasse (Symphodus tinca)
Tordo

Costa Brava

#wrasse #peces #fish
#goprounderwater #underwaterphotography
#snorkeling #snorkelling #snorkel

Female ocellated wrasse perform cryptic mate selection by controlling sperm velocity, performing sexual selection after mating. However, warmer waters reduce the females' ability to control sperm velocity, reducing their ability to enforce mate preference.

https://www.biorxiv.org/content/10.1101/2025.04.10.648287v1?rss=1

#Science #SexualSelection #ClimateChange #Evolution #Fish #Wrasse

Warm waters undermine cryptic female choice

Reproduction is often more thermally sensitive than survival. Thus, understanding the thermal sensitivity of reproductive interactions is crucial given global warming. However, it is unknown how temperature influences female control over fertilization after mating (i.e., cryptic female choice). We tested how temperatures relevant to current conditions and climate change projections influence cryptic female choice in a marine fish, Symphodus ocellatus. Under typical conditions, females bias fertilization dynamics to favor dominant males. We find that warmer temperatures decrease female influence on sperm velocity and reduce the expected paternity of dominant males. Our results demonstrate that temperatures relevant to climate change can shift the balance between mate choice and male-male competition. Thus, climate change may influence sexual selection, leading to evolutionary changes in reproductive traits. ### Competing Interest Statement The authors have declared no competing interest.

bioRxiv
Blue Sea Star and Fivestripe Wrasses on a quick snorkel today!

#starfish #seastar #fish #wrasse #snorkel #underwaterphotography #ocean #nature #pacific #island #guam
Sixbar Wrasse 🌈🐟📍🇬🇺

A frequent favorite, I probably have more photos of this fish than any other. They are not shy and one of the first to greet me on Guam. Doesn't hurt that they're also brilliantly colored. This one with the morning rainbow is a bonus!

#fish #nature #ocean #wrasse #sixbarwrasse #guam #snorkel #uwphotography #underwaterphotography #sony
Colorful Tropical Fish Art Wrasse 2 by Sharon Cummings

Colorful Tropical Fish Art Wrasse 2 Painting by Sharon Cummings

Fine Art America