Footage showed one man grabbing horn shark by its tail before wrapping it in wet blanket and placing it in bucket in child's buggy.
In a shocking incident of robbery, three thieves managed to steal a shark from a Texas aquarium by removing it from a tank and disguising it as a baby in a pushchair.
Police have now appealed for information about two men and a woman caught on CCTV lifting it from a pool where visitors are allowed to stroke some species of fish.
Footage from the place showed one of the men grabbing the horn shark, ‘Miss Helen’, by its tail before wrapping it in a wet blanket and placing it in a bucket in the child's buggy.
A member of staff attempted to confront the group but was unable to stop the suspect.
Several tips from the public allowed police to identify the truck used to steal the animal and two people later confessed.
According to ABC News affiliate KSAT12, police arrested a 38-year-old man.
Local police chief Joseph Salvaggio said his officers at first thought it was a hoax as the US has been celebrating "shark week".
San Antonio Aquarium, from where the 18in-long shark was taken, feared it would be unable to survive.
But Miss Helen was safely recovered and taken back to the aquarium.
According to Salvaggio, the individual had some knowledge on how to deal with these types of animals since when the got into the garage and into the house, it looked like almost a mockup of (the aquarium).