Harlequin Tuskfish

by Amy Tokic

Published: January 28th, 2014

About Harlequin Tuskfish

Size

Medium

Group

Saltwater

Temperament

Non-aggressive

Aquarium Size

Large (55 gal)

Swimming Region

All

Suitable Tank Mates

Angelfish, Tangs, Triggerfish

Difficulty Of Care

Weekly care

Fish Water Condition

Harlequin Tuskfish General description

Harlequin tuskfish are a highly colorful species of wrasse that has gained popularity in the aquarium trade. They are characterized by their sharp blue, tusk-like teeth and distinctive body colorations. Tuskfish are also one of the hardier species of saltwater aquarium fish and acclimatize well to life in captivity. Most specimens available for purchase in the aquarium trade come from Australia and the Philippines and are fairly expensive. Juveniles often cost in the excess of $50 while adults can cost thrice as much. When purchasing harlequin tuskfish it is advisable to purchase specimens caught in Australia as they are often in better condition than those from the Philippines.

Harlequin tuskfish are a highly colorful species of wrasse that has gained popularity in the aquarium trade.

Origins

Harlequin tuskfish are native to the Western Pacific Ocean.

Color

Harlequin tuskfish are one of the most distinctly colored species of wrasse. Their white bodies are covered in reddish-orange bands and these bands are often outlined by thin, blue stripes.

Maintenance and care

Harlequin tuskfish are an extremely fast growing species of fish and can often grow up to 8-10 inches in length in captivity. Therefore it is important to house them in a sufficiently large aquarium with wide open swimming spaces. They also prefer aquariums with numerous hiding places to which they can dart into.

Although tuskfish do not harm corals, they should not be kept in reef aquariums. These fish prey heavily on small species of crustaceans and will devour any snails, clams, echinoderms and other small invertebrates on sight. They can also on occasion prey on smaller species of fish and should only be housed with large, more robust tank mates. It is also advisable to introduce tuskfish to an aquarium first if they are to be kept with larger, more aggressive species of fish. Tuskfish are also highly aggressive towards members of their own species and should ideally be kept as individuals.

Harlequin tuskfish are an extremely fast growing species of fish and can often grow up to 8-10 inches in length in captivity.

Feeding

Harlequin tuskfish are carnivores and should be fed on a meaty diet of krill, shrimp, squid and fish.

Breeding

Harlequin tuskfish are protogenous hermaphrodites and can change sex over the course of their lives. When the dominant male of a group of tuskfish dies the largest female of the group will change sex and assume the role of the dominant male. There are no known reports of tuskfish being successfully bred in the aquarium.

Photo credit: Richard Ling/Flickr; drag-my-soul/deviantart

Amy Tokic

Amy Tokic, Editor of PetGuide.com, is a passionate animal lover and proud pet parent of Oscar, a Shih Tzu/Chihuahua cross, and Zed, a Japanese Chin. Her love of animals began in kindergarten, when she brought her stuffed dog Snoopy into class with her every day. Now, she writes about her adventures in pet ownership and tirelessly researches products, news and health related issues she can share with other animal enthusiasts. In her free time, Amy loves perusing used book and record stores, obsessing over the latest pet products available and chasing squirrels with wild abandon (a habit attributed to spending too much time with her pooches).

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How Much Does It Cost to Feed Your Dog Around the World?

There is no denying the fact that pet ownership can be expensive. From the expected costs of vaccinations and high-quality dog food to the increased fees associated with traveling with your dog by your side, it adds up fast! But exactly how much does it cost to feed your dog? How do these costs stack up compared to dog parents in other areas? If this question has been on your mind, you’re in luck. A recent study by CashNetUSA compares the cost of feeding a dog in 97 countries, and the findings are surprising.Let’s start with the most exciting news for American pet parents. While the cost of feeding a dog in the US didn’t make the list of the least expensive countries, it did rank as one of the most affordable countries when assessing the annual cost versus the national net income per capita. Other countries that made this list include Ireland, France, Sweden, Netherlands, Germany, Belgium, Italy, Slovenia, and Denmark. Of course, this value can vary depending on the quality of dog food you are feeding and the size of your dog (therefore, the amount of food they consume daily). The study collected data based on the cost of feeding a medium-sized dog 540 grams of kibble daily using the cheapest dry food available in local supermarkets. If a country didn’t have available comparable food, the price was calculated using an international supermarket that would ship to the country. The least expensive country to feed a dog was Botswana, at a cost of $163.59 USD annually. This was closely followed by Lesotho ($201.29) and Hungary ($246.38). On the other end of the spectrum, the most expensive country was Japan, with dog food costs reaching a staggering $2,056.88 USD annually. The top 3 most costly countries also included Andorra ($1854.71) and Estonia ($1518.98). What causes such a variation in cost? In addition to the living costs and average income for each country, food quality should also be considered. Countries with exceptionally low annual prices often fed dogs a diet that failed to meet their nutritional needs. “Most retail brands in Botswana and around Africa use basic formulae often resulting in dogs suffering from inflamed skin and increased scratching caused by (an) imbalance in levels of Omera 3 and 6 along with insufficient levels of essential fatty acids like DHA and FPA,” a local entrepreneur told the National Post. If you are struggling with pet food's growing cost, you’re not alone. Many pet parents are seeking ways to keep the costs down without sacrificing the quality of their dog’s diet. Here are a few tips to help keep the costs down: Bake Your Own Dog Treats Dog treats are one of the bigger costs that many dog parents spend on. After all, there are so many incredible treat options available on the shelves of our local pet stores. How do you not want to spoil your furry best friend? Making your treats is not only budget-friendly but also a great way to control the quality of what your dog is eating. Buy in Bulk If your budget allows, purchase a larger bag of dog food or buy your dog’s food in bulk. These products are designed to last surprisingly well on the shelf over time. By buying larger quantities at once, you may spend more in the moment, but the cost per meal drops considerably. If your local pet store doesn’t have a bulk discount, consider asking about purchasing a bulk order and how it could impact the price. Join Loyalty Programs or Subscriptions Many pet stores and online pet retailers offer loyalty programs or subscriptions that help reduce your costs if you continue purchasing from one location. This could mean a lower price per bag with a pre-scheduled subscription order or a loyalty points program where you are rewarded with a free bag after buying a certain number of dog food bags. Join the PetGuide community. Get the latest pet news and product recommendations by subscribing to our newsletter here.

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Scientists Finally Know Why Cats Love Tuna So Much

No food is more synonymous with cats than tuna. Even the pickiest of cats can’t resist the tuna’s fishy flavor. Finally, scientists have learned why cats love tuna so much. In the study published in the journal Chemical Sense, scientists report that cats, like humans, have receptors needed to detect umami flavor. Along with sweet, sour, bitter, and salty, umami is one of the five basic tastes.Umami seems to be the cats’ favorite flavor. Considering that umami gives food a deep and savory meaty aroma, it’s no surprise that an obligate carnivore like a cat would prefer it over all other flavors.The research team also found that cats’ taste receptors bind to two chemicals found in high concentrations in tuna. These chemicals boost the umami flavor, making cats obsessed with tuna. “This is an important study that will help us better understand the preferences of our familiar pers,” says Yasuka Toda, a molecular biologist at Meiji University. According to Toda, this study could help cat food manufacturers create healthier food and more palatable medication for cats. Previous studies showed that cats have a unique palate. Cats can’t taste sugar, because their sweet receptor gene is dysfunctional. Scientists believe that felines lose the ability to taste sweeteners and carbs because they don’t need these macronutrients to survive. Cats also have fewer bitter flavor receptors than humans. This trait is commonly seen in obligated carnivores. “Since discovering that cats don’t have a functional sweet taste receptor, we did wonder what they would respond to instead,” study lead author Scott McGrane, a sensory science expert at Waltham Petcare Science Institute, told Live Science. Humans and other animals possess two genes - Tas1r1 and Tas1r3 that work together to detect umami flavor. Previous research has shown that cats express the umami-related Tas1r3 gene in their taste buds, but it was unclear whether they possess both genes needed to detect umami flavor. The research team led by McGrane discovered that cats expressed both Tas1r1 and Tas1r3 genes in their taste buds. To learn this, the scientist biopsied the tongue of a six-year-old male cat that had been euthanized for health reasons unrelated to this study. However, a closer look at the protein sequences encoded by these genes showed that they are very different from human genes. As it turned out, the main amino acids that activate umami flavor in people - glutamic and aspartic acid - were mutated in cats. “So I began thinking, maybe cats can’t taste umami,” said McGrane. But, as it turned out, amino acids don’t bind to the cat umami receptor alone. Nucleotides, which are common in meat and yeast, bind to the cat receptor and glutamic and aspartic acid then have an enhancing effect. “That’s the exact opposite of what we see in people,” explained McGrane. Cats love tuna because it contains the nucleotide inosine monophosphate. Tuna also contains large quantities of L-histidine, an essential amino acid for cats, that enhances umami flavor. “The L-histidine content of tuna is much higher than of other fish species and meat sources.”These new findings could be used for the development of tastier cat food and pharmaceuticals. Although cat food manufacturers already knew that cats prefer meaty flavors, they now have much more details about the compounds they can start working with. It’s essential for manufacturers to ensure that animals want to eat the food they formulate and find it appealing. “I think umami is as important for cats as sweet is for humans,” said Toda. Dogs, she explained, can taste both sweet and umami, which may explain why they’re not such fussy eaters. Join the PetGuide community. Get the latest pet news and product recommendations by subscribing to our newsletter here.

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