One That Didn't Get Away

(Credit to Sashra @ wowhead.com)

Theres something about One That Didn't Get Away achievement.
103 Pound Mightfish
Caught from:
- Azshara (Bay of Storms, Hetaera's Clutch and Scalebeard's Cave only)

Minimum skill to cast: 330
Minimum skill to avoid get aways: 425
Catch Rate: <1%
22 Pound Lobster
Caught from:
- Azshara (Bay of Storms, Hetaera's Clutch and Scalebeard's Cave only)

Minimum skill to cast: 330
Minimum skill to avoid get aways: 425
Catch Rate: <1%
32 Pound Catfish
Caught from:
- The Barrens
- The Wailing Caverns
- Blackfathom Deeps
- Silverpine Forest
- Undercity
- Bloodmyst Isle (except unnamed inland areas and The Foul Pool)
- Darnassus
- The Deadmines
- Ghostlands (except Southern Lakes)
- Ironforge
- Orgrimmar
- Stormwind City
- Thunder Bluff
- Westfall
- Darkshore
- Loch Modan

Minimum skill to cast: 1
Minimum skill to avoid get aways: 75
Catch rate: <1%

- Ashenvale
- Duskwood
- Hillsbrad Foothills
- Redridge Mountains
- Stonetalon Mountains (except Blackwolf River and Cragpool Lake)
- Wetlands

Minimum skill to cast: 55
Minimum skill to avoid get aways: 150
Catch rate: <1%

- Alterac Mountains
- Arathi Highlands
- Desolace
- Dustwallow Marsh
- Scarlet Monastery
- Stranglethorn Vale
- Swamp of Sorrows
- Thousand Needles

Minimum skill to cast: 130
Minimum skill to avoid get aways: 225
Catch rate: <1%
68 Pound Grouper
Caught from:
- Azshara (except Bay of Storms area)
- Feralas
- The Hinterlands
- Stranglethorn Vale (Jaguero Isle only)
- Tanaris

Minimum skill to cast: 205
Minimum skill to avoid get aways: 300
Catch rate: <1%
Rockhide Strongfish
Notes: Can only be caught during the Stranglethorn Fishing Extravaganza.

Time: Sundays 14:00-16:00 only.

Commentary: Ultra-rare catch from Schools of Tastyfish during the Stranglethorn Fishing Extravaganza. Unlike the other rare fish, there is no quest involved - just equip the fish as a weapon. The Rockhide Strongfish is the rarest of all contest fish - estimated at less than 1 in 1000 catches. Most anglers will never catch it.

Minimum skill to cast: 130
Minimum skill to avoid get aways: 225
Catch rate: Infrequent catch.
15 Pound Mud Snapper
Caught from:
- Azuremyst Isle (Ammen Vale Lakes)
- Dun Morogh
- Durotar
- Elwynn Forest
- Eversong Woods (except unnamed inland areas)
- Mulgore
- Teldrassil
- Trisfal Glades

Minimum skill to cast: 1
Minimum skill to avoid get aways: 25~
Catch rate: <1%
29 Pound Salmon
Caught from:
- Burning Steppes
- Eastern Plaguelands
- Feralas (Jademir Lake only)
- Scholomance
- Silithus
- Stratholme
- Winterspring
- Zul'Gurub

Minimum skill to cast: 330
Minimum skill to avoid get aways: 425
Catch rate: <1%
52 Pound Redgill
Caught from:
- Azshara
- Felwood
- Feralas (except Jademir Lake)
- The Hinterlands
- Maraudon
- Moonglade
- The Temple of Atal'Hakkar
- Un'Goro Crater (except Fire Plume Ridge)
- Western Plaguelands

Minimum skill to cast: 205
Minimum skill to avoid get aways: 300
Catch rate: <1%
Dark Herring
Caught from:
- Howling Fjord (Fangtooth Herring School)
- Grizzly Hills

Minimum skill to cast: 380
Minimum skill to avoid get aways: 475
Catch rate: <1%
Steelscale Crushfish
Caught from:
- Ashenvale
- Hillsbrad Foothills
- Wetlands

Minimum skill to cast: 55
Minimum skill to avoid get aways: 150
Catch rate: <1%