Corphish

Using Corphish in a Playthrough

Corphish evolves into Crawdaunt at level 30, changing from pure Water into Water/Dark and gaining a Psychic immunity alongside a formidable base 120 Attack. Generation III unfortunately prevents Crawdaunt from fully exploiting that Attack with its own STAB because both Water and Dark attacks are special by type and therefore use its lower base 90 Special Attack; physical moves such as Return, Brick Break, or Sludge Bomb are needed to use the stronger stat. The Generation IV physical/special split is consequently one of the biggest improvements the line ever receives, allowing Waterfall, Crunch, Crabhammer, Knock Off, and Aqua Jet to make proper use of Crawdaunt's Attack. Adaptability in later generations raises the same-type attack bonus from 1.5x to 2x and can make even neutral Water- or Dark-type attacks extraordinarily strong, while Dragon Dance and Swords Dance offer setup options. The tradeoff is low base 55 Speed and weak special bulk, so Crawdaunt excels at smashing slower opponents but often needs priority, setup, or a safe switch to avoid being removed by faster threats.

Corphish in Competitive Pokémon

Crawdaunt's competitive reputation improved dramatically once the physical/special split and later Adaptability allowed its base 120 Attack to power both Water and Dark STAB properly. By Generation V it was a serious RU wallbreaker and Dragon Dance sweeper, with Adaptability-boosted Waterfall and Crunch providing extremely difficult-to-resist coverage and enough power to break even many dedicated physical walls. Later generations made it still more threatening through stronger Knock Off, Crabhammer, Aqua Jet, Swords Dance, and Choice Band sets, allowing Crawdaunt to remain relevant as a wallbreaker even when its base 55 Speed leaves it far behind modern offensive Pokemon. Aqua Jet is particularly important because Adaptability turns the normally modest priority move into a meaningful cleaning tool against weakened faster targets. Poor Speed, 63/85/55 bulk, and common Grass-, Fighting-, Electric-, Bug-, and Fairy-type weaknesses limit opportunities to enter battle, but once positioned safely Crawdaunt has repeatedly remained one of the hardest lower- and mid-tier physical attackers to switch into.

Corphish in Nuzlockes

The Corphish line offers strong physical offense and a useful Psychic immunity, but Crawdaunt is less forgiving than many Water-types because its poor Special Defense and low Speed often force it to take damage before attacking. Shell Armor can be outstanding in a Nuzlocke by preventing critical hits entirely, removing one of the most dangerous sources of unexpected damage, while Hyper Cutter prevents opponents from reducing its Attack. Adaptability creates much faster knockouts when available, and Aqua Jet can eliminate weakened opponents before they have an opportunity to move. Water/Dark also introduces weaknesses to Grass, Electric, Fighting, Bug, and later Fairy, so the type is offensively excellent without being especially safe defensively. Crawdaunt is best used as a deliberate breaker against slower targets rather than a general-purpose Water tank, with Shell Armor variants offering the largest margin for error.

Corphish is an exceptionally hardy freshwater crustacean that was originally imported into some regions as a pet before released or escaped individuals established thriving wild populations. It tolerates filthy and stagnant water that many other Pokemon cannot survive in and has almost no dietary selectivity, eating whatever food is available and gripping prey with its large pincers. That adaptability makes Corphish a remarkably successful introduced species: populations released by Trainers in places such as Alola were able to spread easily despite not being native there. Corphish is also unusually fearless around other aggressive aquatic Pokemon and, together with Crawdaunt, is specifically noted for refusing to flee even when swarms of Basculin enter its lake. Its combination of pollution tolerance, broad diet, aggression, and easy establishment makes the species resemble a genuine aquatic invasive generalist rather than a habitat-sensitive specialist.