Gastrodon (Pokémon)

This article is about the species. For a specific instance of this species, see Gastrodon.

**Gastrodon** (Japanese: **トリトドン** *Tritodon*) is a dual-type Water/Ground Pokémon introduced in Generation IV.

It evolves from Shellos starting at level 30.

Gastrodon have two different appearances: **West Sea** (pink and brown) and **East Sea** (blue and green), found on the respective sides of Sinnoh's mountain range.

## Biology

Gastrodon is a sea slug-like Pokémon and appears much the same as its pre-evolution, but it gains four more stubby legs and is noticeably larger. They both have plain black eyes with white irises, with a third eye in the center of their forehead. Like Shellos, Gastrodon has two forms which is influenced by its diet and the sea it lives in.

In its West Sea form, the flower-like crest it had as a Shellos has now turned into horns adorning the side of its head, which point directly upwards in a crescent moon shape. Its underside up to the bottom of its mouth is pink, its back and the top of its head is completely brown, and it has two small protrusions on its back with several pink spots dotted around them. It also has two small protrusions on its neck underneath the horns, and it has a yellow border running down its body from its head, separating the brown and the pink coloration.

In its East Sea form, it retains the horns it had as a Shellos, although now fully colored green which point at a 45-degree angle. Its underside up to the bottom of its mouth is blue, its back and the top of its head is completely green, and it has two yellow "fins" adorned on its back with a third bordering its side and rear, as well as two small blue spots between them. It has a yellow border running down its body from its head, separating the blue and the green coloration.

Gastrodon and its pre-evolution Shellos are examples of allopatric speciation, though they are still able to breed. It is also a relative of Shellder and Cloyster. When it is threatened, it oozes purple fluid and flees. Gastrodon lives in shallow tidal pools. Gastrodon has strong regenerative capabilities that allow it to recover from injures within a few hours. Gastrodon's main diet consists of plankton. However, it is known occasionally looks for food on land leaving a sticky trail of slime in the process. It is known to have a surprisingly resilient body despite its soft and squishy appearance. Gastrodon cannot stay on land for too long due to its body being highly vulnerable to dehydration. In ancient times, it used to have a shell on its back which has changed into a thin yet hard vestigial plate.

## Game data

### Game locations

#### In events

 **SwSh** | Pokémon Japan Championships 2019 East Sea Gastrodon | Japanese

### Stats

#### Base stats

* Maximum stats are calculated with 252 EVs, IVs of 31, and (if applicable) a helpful nature.

### Learnset

#### By tutoring

 * **Bold** indicates a move that gets STAB when used by Gastrodon
* *Italic* indicates a move that gets STAB only when used by an evolution of Gastrodon
* Click on the generation numbers at the top to see Move Tutor moves from other generations

#### By a prior evolution

 * **Bold** indicates a move that gets STAB when used by Gastrodon
* *Italic* indicates a move that gets STAB only when used by an evolution of Gastrodon
* Click on the generation numbers at the top to see moves from other generations

### Evolution

#### East Sea

West Sea Gastrodon's icon423EMS.pngEast Sea Gastrodon's iconIngame sprite for West Sea GastrodonSpr 5 423E.pngIngame sprite for East Sea GastrodonSpr b 5 423E.pngIngame backsprite for West Sea GastrodonSpr b 5 423E.pngIngame backsprite for East Sea GastrodonSpr 5 423 s.pngIngame sprite for shiny West Sea GastrodonSpr 5 423E s.pngIngame sprite for shiny East Sea GastrodonSpr b 5 423 s.pngIngame backsprite for shiny West Sea GastrodonSpr b 5 423E s.pngIngame backsprite for shiny East Sea Gastrodon
## Trivia

 File:Spr b 4d 423b.png
* According to an interview in Nintendo Power with Ken Sugimori, Shellos and Gastrodon were originally intended for Pokémon Ruby and Sapphire, but they were ultimately not implemented due to time constraints.
* Both Shellos and Gastrodon have early back sprites within the game data of Pokémon Diamond and Pearl; however, there are no front sprites for these forms.
* In Diamond and Pearl, no in-game Trainer uses East Sea Gastrodon in battle, even on the east side of Mt. Coronet.
* Prior to Generation VI, Gastrodon's shape was .
* Gastrodon and its pre-evolution were accidentally released in Pokémon GO on April 29, 2019, but were removed shortly after. On May 17, 2019, they made their official debut along with various other Pokémon from Generation IV.

### Origin

Gastrodon is based on a sea slug, perhaps specifically of the order Opisthobranchia.
The East Sea Gastrodon seems to be based on a sea hare.

#### Name origin

Gastrodon is a combination of *gastropod* and *don* (Spanish for *lord*). It may also derive from *Gastropteron*, a genus of sea slug.

Tritodon is a combination of from *Tritoniidae* or *Triton* (referring to either the common name of the gastropod genus *Charonia*) or the aquatic Greek god and *don*. It may also involve the word *torito* (Spanish for *little bull*, referring to its appearance).

## Related articles

* Zoey's Gastrodon
* List of Pokémon with form differences