Sail Forth

The strongest advice I can offer is, Fish Every time it rains! It's very likely that one or all of those fish will be your last ones.
I found that SAILING in a straight line until a weather event starts & then ROWING in circles helped fishing spots to spawn, but it's just my belief, nothing concrete.

In the Frigid Isles there is an NPC Kerblapp that will tell you the location of a random fish if you give him a fish... this is what he says for each fish.
Many of these fish I have caught WELL outside the area he says so take what he says with a grain of sea salt...

• Andromedace - Green Ruins (night, clear)
• Baktiddler - Autumn Isles (day)
• Baybass Vex - Green Ruins (night)
• Cheshirout - (night)
• Chithead - Pine Peaks
• Codzilla - Frigid Sea (snowing)
• Dravenscale - (storm, night)
• Eklipsian Lord - Everywhere
• Gellyfin - Frigid Sea
• Gindyfish - Green Ruins (rain)
• Glosplash - Everywhere
• Glubbgill - (fog)
• Glubsugnite - Green Ruins (night)
• Glubsogson - Frigid Sea (day)
• Hallowfin - Green Ruins (night)
• Hellakfish - Sandy Isles (day)
• Hyrracuda - Pine Peaks (clear)
• Jabbertooth - Green Ruins (night)
• Krobdad - Sandy Isles (day, rain)
• Kruzagger - Pine Peaks (day)
• Midas Kingfish - (clear)
• Montefish - (clear)
• Mystiumfish - Sandy Isles (fog)
• Ponyofish - Pine Peaks (rain)
• Pteradart - Sandy Shores
• Raphalos - Green Ruins (day)
• Ribbontail - Pine Peaks (night)
• Rotsnapper - Frigid Sea (day)
• Spenglerfish - Autumn Isles (rain)
• Troglokite - Autumn Isles (night)
• Trognod - Everywhere
• Uzumackrel - Autumn Isles (day)
• Vasqueye - Sandy Isles (night)
• Yuckfish - Everywhere?
• Zordoojaw - Sandy Isles
• Zothonfish - Frigid Sea

EDIT: An update went out today 1/3/24 that added ONE new fish. I do not know what/where this fish is yet or if its needed for this achievement now.

If this guide needs additions or editing feel free to message me here on TA or on Xbox. If this guide helped you please give a thumbs up.