ZooBorns

Tiny Cuttlefish Babies Abound at Newport Aquarium

Kentucky's Newport Aquarium has a bundle of new arrivals in the form of many baby Cuttlefish. What's a Cuttlefish? It belongs to the same class as squids and octopuses. Regardless of the word "fish" in their name, they are actually mollusks, living mostly in shallow waters -- though they are known to reside in deeper areas as well. They are found along the coasts of east and south Asia, western Europe, the Mediterranean, as well as all coasts of Africa and Australia. 

Cuttlefish come from eggs, the cases of which progress from dark and opaque to light and nearly clear as they approach hatching stage.

For keepers, seeing the newly hatched cuttlefish eating (below) is very important, because it is the main marker that the babies are healthy and will grow. One of the small fish they eat as babies is brine shrimp.

Once fully grown, their preferred diet consists of crabs and fish. They have the ability to use camoflage to sneak up on their prey. When they get close, their eight arms open up and shoot out two long feeding tentacles. On the end of each is a sucker-covered pad that attaches to prey and pulls it toward them.

Photo Credit: Dr. Jerry Carpenter

See more Cuttlefish pictures after the fold:

Adonis Catfish Fry Hatch - A First at the Shedd Aquarium

Aquarists at Chicago's Shedd Aquarium noticed a large clutch of eggs being guarded by an Adonis catfish, (Acanthicus adonis) on February 27. The fish continued to guard and fan the eggs, which hatched 5 days later. Most of the fry were removed to reserve for grow out, but some were left with the parent, who continued to guard the fry.  

The fry that were left with the father stayed near him for another 2 1/2 weeks. Aquarists estimate that the clutch numbered around 1000 individuals. This is Shedd Aquarium’s first birth with this species. The fry on reserve are growing and doing well. 

 

Photo Credit: Shedd Aquarium / Brenna Hernandez

Yipes! Stripes!

It's not uncommon for aquarists at New England Aquarium to find shark eggs in its Trust Family Foundation Shark and Ray Touch Tank. Often, these eggs are not fertile, but a while back, keepers collected one that hatched some five months later, ushering in the arrival of a brand new baby female Epaulette Shark. Her stunning stripes will fade over time, leaving only dark spots, but as juveniles, these solid patterns serve to confuse potential predators in the wild.

For now, the tiny shark pup is most at ease hidden safely inside a piece of tubing in her nursery tank. Until she's old enough to join the rest of the group in the Touch Tank, visitors can meet her parents and watch for newly laid eggs!

You can read more about the epaulette shark baby and learn more about this fascinating species on the Aquarium's Exhibit Galleries Blog: http://galleries.neaq.org/search/label/epaulette%20shark Did you know they can slow down their body functions to survive in low oxygen environments?

Ever See Pipefish Babies?

The Tennessee Aquarium recently received a shipment of 10 wild-caught Alligator Pipefish. Among them were two pregnant males, one of which delivered a few babies upon arrival. Female Pipefish lay between 60 and 200 eggs on the abdomen of the male and he develops a thin membrane around them.  His abdomen becomes soft and spongy, allowing the eggs to receive nutrients from him. Babies hatch after approximately 3 weeks and are about one centimeter in length. That's less than half the length of their father's snout! But this species grows rapidly, with males attaining a length of close to a foot and females being slightly smaller.

Pipefish have a prehensile tail like a seahorse that they use to hitch onto just about anything around them, including each other. They'll hang out in a backup area at the Aquarium until they are big enough to be placed on exhibit. In the wild, alligator pipefish (Signathoides biaculeatus) are found throughout the Indo-Pacific ocean. 

Photo Credit: Tennessee Aquarium

Read more about these fascinating pipefish after the jump:

Ozark Hellbender Salamander Success!

The Saint Louis Zoo and the Missouri Department of Conservation today announced that Ozark hellbenders have been successfully bred in captivity - a first for either of the two subspecies of hellbender. This decade-long collaboration has yielded 63 baby hellbenders so far. Both parents are wild bred: the male has been at the zoo for the past two years and the female arrived this past September.

The first hatched on November 15, and approximately 120 additional eggs are expected to hatch within the next week. Behind the scenes in the Zoo’s Herpetarium, the eggs are maintained in climate and water quality-controlled trays. For 45 to 60 days after emerging, the tiny larvae will retain their yolk sack for nutrients and move very little as they continue developing. They will begin to grow legs, and eventually lose their external gills by the time they reach 1.5 to 2 years of age. 

Once the captive-bred larvae are 3 to 8-years-old, they can then be released into their natural habitat the Ozark aquatic ecosystem. They are kept in elaborate facilities that recreate the ideal environment in which they can thrive in during that time. 

Photo Credit: MarkWanner/SaintLouisZoo

Creepy or Cool? Cuttlefish Hatchlings

For the past few weeks aquarists at the Tennessee Aquarium have been monitoring an egg mass which was laid by a cuttlefish pair born and reared at the Aquarium. Shortly after the eggs were removed from the exhibit and placed into a holding tank, tiny cuttlefish began hatching. Carol Haley, the Aquarium’s assistant curator of fishes, said, “The first day about 42 hatchlings appeared. Another 40 or so appeared the following day.”

The hatchlings, called cuttlets, are tiny replicas of their parents. Each individual is small enough to fit inside a quarter teaspoon. Once they emerge from the egg sac, they begin hunting. “They have a pretty big appetite and are ready to use their tentacles to snare the live mysid shrimp we feed them,” said Haley.

These babies are too small to be placed on exhibit like their parents. Right now they use their chromatophores to look like tiny pebbles in the bottom of the holding tank they’ll call home for the next few months. They also use another trick to avoid being a tiny treat for a predator. “Even at their small size they can produce ink,” said Haley. “They will ink more as feisty teenagers, usually when they reach about six months of age.”

When they are six to seven months old, they’ll be large enough to go on exhibit. Until then, Aquarium guests can see these miniature cuttlefish in the Quarantine Room during the 1:30 p.m. Backstage Pass Tour. “Cuttlefish babies are super cute as babies and people are still fascinated by them when they reach adulthood,” said Haley. “They might be the most adorable ‘sea monsters’ you’ll ever see.”

Photo Credits: Bill Hughes/Tennessee Aquarium

 

 

Living Coasts Aquarium Breeds First Venomous Fish

Living Coasts Aquarium has bred a venomous fish for the first time. The new arrival is the first Blue Spotted Stingray is only the second one ever born in the UK. According to Living Coasts zoo keeper Stuart McGeachie, “It was born in July, live and fully formed, complete with stinging barb and claspers - male appendages. It was about 10 centimeters across - they grow to around 30 to 35 centimeters.”

Torquay’s coastal zoo is home to three adult blue spotted stingrays – males Zorro and Baby Boy, and female Baby Boo. McGeachie added, “We are not sure which male is the father, as both were seen trying to mate with the female. Zorro is the larger of the two, so we suspect it is him!”

Photo credits: Living Coasts Aquarium

Living Coasts director Elaine Hayes said: “They are seen in aquariums, but they get confused with blue-spotted ribbontail rays (Taeniura lymma ). Because of this it is very difficult to establish numbers. The records say there are just 42 in collections, with only 3 births in the last 12 months, not including ours.”

The blue spotted stingray (Dasyatis kuhlii) is light green with blue spots. A member of the shark family, this saltwater fish is found in shallow tropical waters. It has venomous barbs on its tail.

Wolf-eel Babies Hatch in High Definition

In late March, we brought you news of Birch Aquarium at Scripps' hatching of 250 tiny Wolf-eels. The Aquarium has just released stunning close-up images of the remaining eggs. The pictures, taken by Peter Kragh, show the eels at the very moment of birth. Adult Wolf-eels are generally curious and friendly, despite measuring 80 inches or more when fully grown.

Photo credits: Peter Kragh

Helping Wolf Eel Babies to Hatch at Birch Aquarium

Birch Aquarium at Scripps is proud to announce the hatching of baby Wolf-Eels! Birch aquarists have so far collected about 250 Wolf-Eels from the mass of eggs, with another few hundred expected to hatch over the next two weeks. The tiny fish are born brownish-pink, about 1 1/2 inches in length. They begin to turn dark gray within a day or so, and begin snacking on tiny shrimp after a few days. They will grow to several feet in length. Check out the video below of aquarist Mark Ball overseeing the hatching!

Wolf Eel eggs weeks after being laid

Mother Wolf Eel guarding her little ones

Photo and video credits: Birch Aquarium

Rare Footage of a Papa Seahorse Giving Birth!

The Tennessee Aquarium's seahorse gallery is a busy nursery but actual footage of seahorses being born is still rare. Lucky for us Carol Haley, the Aquarium's Assistant Curator of Fishes, caught this amazing video of Lined Seahorses being shot-outta-Pop (that is not the technical term). Many people are surprised to learn that it's the father, not the mother, seahorse that gives live birth to the young.  In the video, you’ll notice the babies racing away from dad towards the surface. There’s a reason for that according to aquarist Elaine Robinson. “When they are born, Hippocampus erectus fry swim quickly to the surface of the water to gulp air for the primary phase of swim bladder inflation,” said Robinson.  “Lined seahorses tend to be pelagic, drifting near the surface of the water, in search of their prey.” 

In the pictures below, a toothbrush has been inserted for size reference

Photo credits: Thom Benson / Tennessee Aquarium

Aquarists quickly remove the babies to care for them in backup areas until they are strong enough to be placed on exhibit or shared with other AZA (Association of Zoos and Aquariums) accredited institutions.

See and learn more below the fold