This is an easy place to get rare servofish (tromyzon) : r/Warframe
Warframe - Murkray Fishing Guide - YouTube
How to catch rare fish on the Plains of Eidolon in Warframe - Gamepur
How to Fish in WarFrame
Steam Community :: Guide :: Fishing locations
Warframe fishing guide – best spear and spots | LEVVVEL
Where can one find the most Murkrays spawns? Do they show up often? - Players helping Players - Warframe Forums
Best murkray fishing spot after plains of eidolon remastered? - Players helping Players - Warframe Forums
Warframe – How To Quickly Catch Rare Fish On The Plains Of Eidolon - ISK Mogul Adventures
Warframe Fishing Guide — Steemit
How to Use Bait (How to Catch Rare Fish) in Warframe | Plains of Eidolon Fishing Guide - YouTube
Where to consistently catch Murkray. I started catching at mid-day for less reflective waters. These are with/without baits. I find that without baits i was consistently getting more murkrays to spawn. :
Steam Community :: Guide :: Fishing Guide
Warframe: How to Catch Rare Fish on the Plains of Eidolon | Attack of the Fanboy
Steam Community :: Guide :: Fishing locations
Best murkray fishing spot after plains of eidolon remastered? - Players helping Players - Warframe Forums
Murkray Fishing Guide | Warframe Plains of Eidolon - YouTube