A bottlenose dolphin found stranded near Mile Marker 18 at Padre Island National Seashore on Saturday night by park staff has pneumonia, officials with the Texas State Aquarium said Monday.

But additional tests still are needed to determine the overall condition of the 287-pound dolphin, said Sarah Paige, the aquarium’s animal husbandry director.

The female dolphin, who was given the name Alice, receives fluids every four hours and is monitored closely at the aquarium’s Sea Lab. She is housed alone in a 40,000-gallon tank.

Lea Walker, Corpus Christi regional coordinator for the Texas Marine Mammal Stranding Network, estimated the dolphin is an adult about 5 to 7 years old.

“We’re cautiously optimistic at this point,” Walker said. “She’s definitely feisty.”

Park employees on sea turtle patrol spotted the dolphin about 6 p.m. Saturday and immediately contacted Texas Marine Mammal Stranding Network staff to help in the rescue.

Rain, high winds and cold weather made it tough for rescuers to reach the dolphin’s location and to make the careful transfer.

“The beach was horrible. It took about two hours to get there and getting back was bad too,” Walker said.

Aquarium staff and network volunteers are unsure why the dolphin became stranded but plan to begin feeding her solid food within the next couple days.

“We have to be careful and introduce it slowly,” Walker said. “We might start with a mixture of fish gruel.”

Bottlenose dolphins commonly inhabit warm seas throughout the world and on average live about 25 years. Officials said the bodies of very young or old dolphins that became ill often are found stranded along the coastline between January and late March.

“The fact that she’s alive shows she’s tough,” Walker said. “The best-case scenario is she fully recovers and can be re-released into the Gulf of Mexico.”