HulloThere
@jethroreading32.bsky.social
PhD student at Southampton, studying mesopelagic fish ecology. Occasional writer and amateur baker. Tweets about fish in superlatives. Opinions my own.
I gotta know why Alepisaurus have this thing. It's apparently not functionally similar to sailfish (which only raise their fin when feeding). Is it sexual selection? I can't fathom that when you live at daytime depths of >1km and aren't bioluminescent!
November 27, 2025 at 10:19 PM
I gotta know why Alepisaurus have this thing. It's apparently not functionally similar to sailfish (which only raise their fin when feeding). Is it sexual selection? I can't fathom that when you live at daytime depths of >1km and aren't bioluminescent!
War was always here. Even before man was, war waited for him.
November 27, 2025 at 2:49 PM
War was always here. Even before man was, war waited for him.
You caught the colours so accurately! They really are beautiful fish.
November 27, 2025 at 9:39 AM
You caught the colours so accurately! They really are beautiful fish.
It's really nice to be so thrilled about doing this again - there are fish I've been reading about this evening which I really really want to talk about right this second, it's gonna be a pain to have to wait three weeks!
November 26, 2025 at 11:27 PM
It's really nice to be so thrilled about doing this again - there are fish I've been reading about this evening which I really really want to talk about right this second, it's gonna be a pain to have to wait three weeks!
Lures tend to be found on sluggish ambush predators (e.g. anglers, Chiroteuthids) so I definitely lean towards some other function in Taningia - such an impressive, athletic species, and really acrobatic to boot.
November 26, 2025 at 9:34 PM
Lures tend to be found on sluggish ambush predators (e.g. anglers, Chiroteuthids) so I definitely lean towards some other function in Taningia - such an impressive, athletic species, and really acrobatic to boot.
Ahhh very nice, some sort of gempylid/snake mackerel I assume?
November 26, 2025 at 9:20 PM
Ahhh very nice, some sort of gempylid/snake mackerel I assume?
Top 5 coolest animal of all time
November 26, 2025 at 7:35 PM
Top 5 coolest animal of all time
That’s not a myct!!! Howella, beautiful!
November 26, 2025 at 12:40 PM
That’s not a myct!!! Howella, beautiful!
Nice opinion, did 2013 write it for you
November 24, 2025 at 5:20 PM
Nice opinion, did 2013 write it for you
Naming my child Otto (short for Otolith)
November 24, 2025 at 8:36 AM
Naming my child Otto (short for Otolith)
A top 5 shark tbqh
November 22, 2025 at 11:32 PM
A top 5 shark tbqh
I empathise with that - I always remember being in careers talks at undergrad which were like "oh you can do anything in the world with a marine biology degree :)" and being like "ok but I want to be a marine biologist"
November 22, 2025 at 11:31 PM
I empathise with that - I always remember being in careers talks at undergrad which were like "oh you can do anything in the world with a marine biology degree :)" and being like "ok but I want to be a marine biologist"
This is so McQuarrie Mission Impossible coded
November 21, 2025 at 10:20 PM
This is so McQuarrie Mission Impossible coded
Is this Bathysaurus proper or the other thing that looks just like it (Bathysauropsis?)
November 21, 2025 at 9:37 PM
Is this Bathysaurus proper or the other thing that looks just like it (Bathysauropsis?)
They're in the genus Salmo - all species of Salmo except for Atlantic Salmon are called trout so (slightly tongue in cheek here) they should be called trout as well. The other salmons (Chinook, Sockeye etc) are all Oncorhynchus.
November 20, 2025 at 4:50 PM
They're in the genus Salmo - all species of Salmo except for Atlantic Salmon are called trout so (slightly tongue in cheek here) they should be called trout as well. The other salmons (Chinook, Sockeye etc) are all Oncorhynchus.
Incredible looking fish, I can’t believe how big many of these random salmonids are. I really just need to devote some more time, attention, and love to freshwater fishes!
November 19, 2025 at 11:27 PM
Incredible looking fish, I can’t believe how big many of these random salmonids are. I really just need to devote some more time, attention, and love to freshwater fishes!
I didn't even realise Atlantic salmon don't turn red. The walls are tumbling down around me. I am alone and enfeebled by the weight of salmon knowledge, like Fionn mac Cumhaill*
(That at least I did know before this evening's mini-rabbithole)
(That at least I did know before this evening's mini-rabbithole)
November 19, 2025 at 11:06 PM
I didn't even realise Atlantic salmon don't turn red. The walls are tumbling down around me. I am alone and enfeebled by the weight of salmon knowledge, like Fionn mac Cumhaill*
(That at least I did know before this evening's mini-rabbithole)
(That at least I did know before this evening's mini-rabbithole)
3:17:22 YouTube Iceberg video about Salmon when
November 19, 2025 at 11:01 PM
3:17:22 YouTube Iceberg video about Salmon when