Japanese rice fish detect ultraviolet rays from sunlight directly with the pituitary gland and turn their bodies black for protection, a team has found. https://www.japantimes.co.jp/news/2025/02/06/japan/rice-fish-uv-rays-pituitary/?utm_medium=Social&utm_source=mastodon #japan #japanesericefish #universityoftokyo #okayamauniversity
Japanese rice fish detect UV rays with pituitary gland

The team suspects that animals with almost translucent bodies may have yet more systems to detect light directly.

The Japan Times

Japanese Rice Fish (Freshwater Fish Pictorial Book 1, revised release, by Yujin)

5 (4 votes)

This figure is the Japanese Rice Fish (or Medaka or Japanese Killifish), Oryzias latipes, number 11 from the first series. This is the only beloniforme fish in the set; this order includes other surface-oriented fish like flying fish, needlefish and halfbeaks (but, not killifish—taxonomy can be weird). The Japanese Rice fish is found […]

Read more... https://animaltoyforum.com/blog/japanese-rice-fish-by-yujin/

#JapaneseRiceFish #Medaka #Oryzias #OryziasLatipes #Yujin

Japanese Rice Fish (Freshwater Fish Pictorial Book 1, revised release, by Yujin) – Animal Toy Blog

https://www.liminalweb.site/summer-project/

My summer (and hopefully longer) project with the kids. aka "we finally have pets and my daughter is happy, let's now hope my son doesn't kill them 'playing' with them... that or the summer heat."

#Japan #summer #fish #medaka #JapaneseRiceFish

Summer Project - liminal web

Here are a couple of pictures of this summer project with the kids (and hopefully a long-term one).

Liminal Web

Last medaka photos in a while. I promise!

Beni Ryuu 紅龍
Himedaka ヒメダカ
Hirebi Kuriimu ヒレ美クリーム
Kinshu 錦秋 (きんしゅう)

#aquarium #medaka #coldwaterfish #summertubbing #pondkeeping #japanesericefish #ricefish #oryziaslatipes #minipond #aquariumhobby #aquariumfish #fishkeeping

Been photographing some of my medaka strains. Do note these are the indoor colors, but still looking great imp! 😁

華蓮 "Karen"
紅白 "Komachi"
yama紅帝 "Yama Koutei"
オーロラ黄ラメ幹之 "Aurora Ki"

#aquarium #medaka #coldwaterfish #oryziaslatipes #japanesericefish #ricefish

Beni Ryuu (紅龍) indoor colors after feeding them color pellets for a few weeks (housed with black sand, 3 black walls, and dark plants) 😎

#medaka #medakafish #japanesericefish #ricefish #oryziaslatipes #minipond #summertubbing #aquarium #aquariumhobby #aquariumfish

been feeding my beni ryuu color enhancing food for months and they finally show a bit of red 😁
#aquarium #medaka #coldwaterfish #ricefish #japanesericefish