Not all heroes wear capes.

A fish aquarium employee in San Antonio, Texas rescued a disabled goldfish from a life of immobility after building him a wheelchair.

On March 10, 19-year-old Taylor Nicole Dean tweeted a text message exchange with her friend Derek, the aquarium employee. Derek sent her a so-cute-you’ll-want-to-cry picture of the blue-eyed fish in his new device.

“A customer brought in a goldfish with a permanent bladder disorder so I made him a custom wheelchair and he loves it,” read the text.

https://twitter.com/taylorndean/status/840280215645503488/photo/1

The goldfish’s bladder problem affected his buoyancy, trapping him at the bottom of the tank, unable to float or swim.

The genius contraption has three small tubes to stabilize the goldfish in an upright position, and uses a piece of string and Styrofoam to help the little guy float.

Dean’s initial tweet received more than 1,000 likes and around 500 retweets. One user even responded that her goldfish has a similar a problem, and has been floating upside down for a month.

She tweeted an update Wednesday, letting everyone know that the fish was doing great and “got an even more comfortable wheelchair.” The latest version appears to have incorporated a piece of mesh.

Happy swimming buddy.