[[File:Alpha bukuu.png|200px|right|thumb|Qwilfish's early design]]
* An [[Unreleased Pokémon#Kirinriki|early design]] for Qwilfish depicts it with a more fish-like tail and fins.
* Qwilfish is compatible with the [[Generation III]] [[move tutor]] for {{m|Swords Dance}}, but is incompatible with the [[TM]] in [[Generation IV]] that teaches the same move.
* Qwilfish is compatible with the [[Generation III]] [[move tutor]] for {{m|Swords Dance}}, but is incompatible with the [[TM]] in [[Generation IV]] that teaches the same move.
** Conversely, it is compatible with the Generation IV TM that teaches {{m|Explosion}}, but incompatible with the Generation III move tutor for the same move. However, it is compatible with the Generation III move tutor for {{m|Selfdestruct}}, a weaker version of Explosion.
** Conversely, it is compatible with the Generation IV TM that teaches {{m|Explosion}}, but incompatible with the Generation III move tutor for the same move. However, it is compatible with the Generation III move tutor for {{m|Selfdestruct}}, a weaker version of Explosion.
Qwilfish is a small, round fish Pokémon covered in many sharp spikes. These spikes are derived from its scales. It has a paddle-shaped tail which is about half of its body length, colored with a bluish line around the perimeter and two markings in the center of the pattern. The top of its body is a bluish color, while its underbelly is a pale cream color. Qwilfish has large pink lips.
Gender differences
None.
Special abilities
The spines that cover its body are filled with a toxin which is known to cause fainting. It is able to fire these spines from its body by swallowing large amounts of water. This ability also makes this Pokémon appear bigger than it actually is, making it less vulnerable to predator attacks.
Behavior
When faced with a larger opponent, Qwilfish swallows as much water as it can to match the opponent's size. Qwilfish also finds swimming somewhat challenging, due to its round form.
Qwilfish, the Balloon Pokémon. The quills covering the entire body have evolved from scales. A Qwilfish can cause its body to swell in order to shoot its needles in all directions.
In the manga
Pokémon Adventures
A swarm of Qwilfish appeared in Volume 10, angered by pollution that occurred as a result of an accident that occurred during the construction of the Battle Tower.
In order to attack the enemy all over the body with its poisonous sting, the Qwilfish has to take in a lot of water and expand up to several times of its actual size.*
Qwilfish sucks in water, inflating itself. This Pokémon uses the pressure of the water it swallowed to shoot toxic quills all at once from all over its body. It finds swimming somewhat challenging.
A Qwilfish uses the pressure of water it swallows to shoot toxic quills all at once from all over its body. It finds swimming to be somewhat challenging.
Conversely, it is compatible with the Generation IV TM that teaches Explosion, but incompatible with the Generation III move tutor for the same move. However, it is compatible with the Generation III move tutor for Selfdestruct, a weaker version of Explosion.
Qwilfish shares the same species name with Jigglypuff's evolutionary family and Drifloon. They are all known as the Balloon Pokémon.
It is the only Balloon Pokémon that neither evolves into or from another Pokémon.
Qwilfish's Japanese name (Harysen) is similar to the name of the TrainerHarrison, who, coincidentally, owns a Qwilfish.
Coincidentally, they learn Stockpile at the same level: 25.
Despite being constantly referred to as a bad swimmer in the Pokédex, Qwilfish is able to learn the move Surf and one of its abilities is Swift Swim.
Qwilfish has its backsprite showing its full body in four generations.
Origin
Qwilfish is based on both pufferfish and porcupinefish. Its ability to shoot its toxic quills somewhat resembles explosions, and may mean it may have been based on a naval mine.
Name origin
Qwilfish's name is a combination of a misspelled quill and fish. Its Japanese name could be a contraction of 針千本 harisenbon, porcupinefish, or the "sen" could come from senbon, or needle. An early version of Qwilfish was called Bukū, which is probably a corruption of 河豚 fugu, pufferfish.
In other languages
German: Baldorfish - Possible portmanteau of Ball and Fisch (fish).
This Pokémon article is part of Project Pokédex, a Bulbapedia project that aims to write comprehensive articles on each Pokémon species, as well as Pokémon groups and forms.