A woman has documented her betta fish's remarkable transformation after relocating it from a cramped shop tank to a proper home aquarium, astonishing social media users. The fish, named Tank Sinatra, initially displayed dull colouration and underwhelming fins, but thrived under improved conditions.
In a video caption, the owner addressed a common myth: 'They live in cups for months at the stores, they don't need filters or heaters.' She noted that Tank had been visibly distressed before receiving appropriate accommodation. His colour was washed out and his fins lacked the dramatic flair characteristic of the species.
Once provided with suitable care, Tank developed a rich crimson hue with striking blue highlights, and his fins grew to more than twice their original size. His behaviour also changed from motionless and miserable to energetic and curious. The new aquarium included enrichment items like miniature fish houses and abundant plant life.
The owner stated: 'Betta fish change colour when they're happy (or stressed). It's safe to say Tank is a very happy guy.' Signs of a content betta include active behaviour, vivid colouration, and engagement with its owner.
Commenters shared their own experiences, with one noting that many assume bettas live in puddles, but in rice paddy fields the water can be knee-deep. Another admitted to previously keeping bettas in tiny containers, not realising that 'surviving doesn't mean thriving'.
Pet MD advises that single betta fish should be kept in an aquarium of at least one gallon, with space to breathe from the surface and a lid to prevent jumping.
