Turn left at the next rocky atoll: small fish fare well with new satellite tags

The ups and downs of Atlantic halibut spawning

“…Despite these difficulties, in this issue Marshall et al (2023) better characterize the reproductive behaviour of the Atlantic halibut using pop-up satellite archival tags (PSATs), a relatively new and increasingly versatile technology which has been highlighted in previous issues (Naisbett-Jones et al, 2023;Perry, 2023). Rather than using the PSATs for horizontal migration, authors use the data on depth and acceleration recorded by the PSATs to understand the reproductive behaviour of the Atlantic halibut in the vertical plane, with extensive ascents (up to 284 m) in the water column indicating spawning.…”