Pufferfish Care Guide - Tank Requirements, Diet, Lifespan & More (2024)

Having a perfect blend of adorability and scariness, Pufferfish are one of the most intriguing freshwater species that you can host in your aquarium. Although they are highly poisonous, they can make for great aquatic pets. Not only are they under-represented in the fishkeeping trade, but they are also very misunderstood.

Therefore, we have compiled athorough care guide for Pufferfish so that all myths about them can be bustedand more information about them can be attained. Remember, this is not your average aquariumpet; therefore, you need to take caution while handling them – not only fortheir safety but for yours as well.

Key Specifications of Pufferfish

Before we get to know thisunorthodox aquatic pet in detail, let us take a look at some of its keyfeatures.

Overview

Pufferfish are famous around the world for their ability to inflate their bodies in the shape of a ball several times their normal size. They are poisonous and come in a variety of sizes and colors.

This unique species is known by a bunch of different names such as Ballonfish, Globefish, Blowfish, Blowies, Toadfish, Sugar Toads, Honey Toads, SeaSquab, Swellfish, Bubblefish, Puffers, among others. Some of the most common variants of freshwater Pufferfish are Fahaka Puffer, Dwarf Puffer, Pignose Puffer, Avocado Puffer, Amazonian Puffer, etc.

Pufferfish have a notorioustemperament and are sensitive to water conditions. They are not easy to pet and require extremecare, which is why only advanced aquarists are recommended to pet them.

Origin & Habitat of Pufferfish

Pufferfish are a tropical fishthat are found across marine and freshwater, and some even in brackish water. Theyhave over 150 variants, out of which 40 live in brackish water and 29 variantslive in freshwater.

This unorthodox aquatic petbelongs to the Tetraodontidae family, which is one of the ten families thatfall in the Tetraodontiformes order. Tetraodontiformes emerged 40 million yearsago from coral-dwelling species. Boxfish, Triggerfish, Porcupine Fish, andFilefish also fall in the same order as Pufferfish.

You can spot Pufferfish in the rivers and lakes of Southeast Asia, especially in India and Bangladesh. They are also seen in the Amazon River basin in South America and Congo as well as the Nile and other rivers in Africa. Although most of them are found in riverbeds with thick vegetation, some can also be seen in lakes such as the Mbu Pufferfish that is seen in Lake Tanganyika.

Appearance of Pufferfish

Pufferfish have long and taperedbodies with rounded heads and thin, hidden spikes that are visible when they pufftheir bodies. As such, they don’t have any scales.

They also have four large teeththat are fused into an upper and lower plate. These teeth help them crush thehard shells of mollusks and crustaceans. They have fuller lips that help themtaste the texture of potential food and decide if it is worth eating. They alsohave bulging eyes.

Since their bodies are veryrigid, they are completely dependent on their fins for balance and motion.

Some variants of Pufferfishcontain tetrodotoxin, which is highly poisonous. It is present in theirinternal organs, such as the liver and in their skins. They are the mostpoisonous vertebrates in the world. They don’t directly produce the poison butinstead gather bacteria that create the tetrodotoxin for them.

In the wild, they gather thesebacteria through the food they consume from nature. Therefore, they are mostlysafe in captivity as they generally won’t have access to those bacteria in youraquarium. In addition, not all Pufferfish are poisonous.

Size of Pufferfish

The size of Pufferfish depends onindividual variants. Some can be of an inch (2.5 cm) in length while others canbe about 3 feet in length (36”/91 cm).

Color of Pufferfish

Similar to their size, their colors also differ from variant to variant. Some Pufferfs have intense, wild colors and markings that pronounce their toxicity, while others have a more subtle, cryptic, or muted coloring which helps them camouflage or blend with the environment. Mostly, they are in pastel, yellow, green, brown, and white colors.

Behavior of Pufferfish

The most famous behavior of theseadorable species is their ability to puff their bodies on a dime and use it asa defense mechanism when threatened. When they inflate themselves, spinesprotrude from their bodies thereby preventing their predators from eating them.Besides, they become several times larger than their actual size in the shapeof a ball, making it even more inconvenient for their predators to consumethem.

Speaking of their temperament,they are pretty aggressive and territorial despite their cute appearance. Thisaggression intensifies even more during breeding.

They are also known for their varied hunting techniques. Some are open water hunters such as the South American Puffer or the Golden Puffer that swim over sandy or rocky substrate looking for their prey. Other such as the Red-Tailed Dwarf Puffer and Crested Puffer are stealth predators that lurk in the shadows, hiding and waiting to attack their prey. There are also ambush predators such as the Congo Puffer that dig themselves into the sand and wait for their prey to come by, upon which they lunge upward towards them for the kill.

They also are known for spittingor blowing water over the substrate to uncover any prey that may be hidingthere. It has also been seen that these fish spit water at their owner from thesurface (if there is no tank lid) in order to ask for food.

Lifespan of Pufferfish

If taken care of well enough, yourPufferfish can live up to 10 years. This means that you are going to have toprepare yourself for a long-term commitment from your end in order to pet themat your home.

Diet of Pufferfish

Even though they are technicallyomnivores, the diet of a Pufferfish is predominantly meat-based. In theirnatural habitat, they mostly survive on snails, shellfish, crustaceans, andalgae. In captivity, they are open to live, frozen, freeze-dried food, flakesas well as pellets. When you are feeding them live food, make sure youquarantine them in order to avoid infections. They can be given plant-basedfood once or twice a week.

Their teeth keep on growing theirentire life. It is important that they are fed hard-shelled food since it wouldhelp contribute to the growth of their teeth.

They are voracious and messy eaters and you would have to remove uneaten and leftover food from the aquarium pretty often in order to maintain the health of your tank.

The size of your Pufferfish will dictate how frequently you need to feed them. To be more specific, if your Pufferfish is under 2” (5 cm), then you will have to feed them daily; if they are 2-4” (5-10 cm) long, then you need to feed them every other day; else if they are more than 4” (10 cm) long, then they need to be fed 2-3 times a week. Make sure not to overfeed or underfeed your pet.

Tank Requirements for Pufferfish

It is very important to make yourPufferfish feel at home. This is why you need to replicate its natural habitatas much as possible in your aquarium. To help do that, we are providing thefollowing parameters that you need to keep in mind while setting a tank forthem.

Tank Size

The tank size that you would need for your Pufferfish will be dictated by which variant you are hosting in your tank. Therefore, we are providing the recommended tank size for various types of Pufferfish in the following table.

Remember, the aforementioned tanksizes are for a single Pufferfish only. They are anyways suggested to be keptalone. Read more about their tankmates in our ‘Compatibility of Pufferfish’section. The larger the tank will be, the better it will be since they create alot of waste.

Tank Lid

As we stated above, they are known for squirting water from the water surface to the owner to demand food. In addition, their spikes make them dangerous and you definitely don’t want any kids or your other pets such as a cat or a dog to come in contact with them. Thus, using a firm tank lid is a no-brainer here.

Substrate

The requirement of the substrate is also governed by the type of Pufferfish you are keeping in your tank, but mostly a soft, sand-based substrate works fine for them.

Filter

You need to invest in a goodfiltration system that produces low current but has the capacity of getting ridof wastes frequently since Pufferfish are pretty messy and produces wastes throughoutthe day.

Nature of Lighting

Provide moderate light to theirtank for 8-10 hours in a day.

Presence of Flora

If your Pufferfish is a stealthpredator, then you would have to provide thick vegetation in their tank since theywould need those plants for hiding.

Ornaments

Include bogwood, aquatic rocks,stones and caves in your aquarium that may serve as hiding spots for yourPufferfish.

Cleaning Method

Pufferfish are messy! Therefore, cleaning their tank is even more important that cleaning tanks that host other freshwater fish. We recommend doing it every three weeks. Not only you have to scrape off algae from the walls and wipe it with a soft cloth dipped in lukewarm water, but you also need to clean the ornaments by putting them under running water and vacuuming the substrate. Just make sure that you are not using any soap or chemical-based product since that may jeopardize the health of your fish.

Water Type for Pufferfish

Regular tap water can be used foryour freshwater Pufferfish as long as it doesn’t have a high concentration ofiron or chlorine in it. In that case, you have to use filtered water.

Temperature

The temperature of the tank watershould be 74-78° F (23-25° C).

pH Level

They prefer slightly alkaline water. Try to keep the pH level of your tank water between 7.0-7.6.

Hardness

The Carbonate hardness of thewater should be 8-12 dKH.

Mineral Level

Since they don’t have scales, don’tlet ammonia and nitrite level rise up in your tank. In addition, keep thenitrate level below 50 mg/l.

Replacement Procedure

Regular water replacement isessential in a Pufferfish tank because they create a huge amount of wastes andthey are highly susceptible to diseases.

You can replace 10% of the tankwater every 15 days or replace 25% of the tank water every month, whichever ismore convenient for you. But whichever option you pick, try and stick with it.Whenever you add in a new batch of water, make sure its temperature, pH level,hardness, and mineral level is similar to the existing batch of water.

In addition, you shouldn’t replace the entire water content altogether since that will kill off the beneficial bacteria from the tank and might send your Pufferfish into a shock.

Compatibility of Pufferfish

These fish are extremelyterritorial and aggressive. An interesting aspect of their temperament is thatit sometimes changes with age. In other words, it might happen that a juvenileis peaceful and does amazingly well in a community tank; however, the samejuvenile can turn aggressive when it turns adult.

They are ferocious fin-nippersand will often attack other pet species (be it fish or non-fish pets such asany invertebrates) to kill boredom. Therefore, it is advised to keep them aloneall the time.

They are not to be kept withtheir own kind as well. Only a few variants of Pufferfish can be kept in pairsor small groups, such as Ceylon Pufferfish, Figure 8 Pufferfish, and SouthAmerican Pufferfish.

Breeding of Pufferfish

Breeding Pufferfish is extremelyrare in captivity. This is why they are mostly spawned in commercial tanks. Moreover,different variants of Pufferfish have different water and tank requirements forbreeding. But, probably the most difficult part for aquarists is to find acompatible matching pair for them given their highly aggressive nature.

Even if you do manage to find amatching pair, protecting the fries will be an extremely difficult challengesince Pufferfish are known for eating their own fries as soon as the eggshatch. The fries are very sensitive to changes in water conditions and need to befed Infusoria and freshly hatched Brine Shrimps. So, it’s no wonder why mostpeople avoid breeding them.

Pufferfish Diseases

Due to the fact that they don’thave any scales, they are highly susceptible to attacks from ectoparasites; andthe most common type of parasite to attack them is protozoa, which attackstheir skins, gills, and fins.

They are one of the first freshwateraquarium fish to suffer from Ich. In this scenario, raise the temperature ofthe water temporarily by 2-3 degrees. Also, don’t hesitate to take the help ofa veterinarian.

Quarantining your fish and any other objects before introducing them to your main tank is the key here since you never know what may act as the carrier of the parasite. In addition, be very attentive while maintaining the proper water parameters and tank conditions. A clean environment will go a long way in ensuring the good health of your Pufferfish.

Summary

Pufferfish are one of the mostunique freshwater fish that one can pet. Despite their adorable appearance,they are highly aggressive and can pose a serious threat to their predators withthe help of the toxins present in their bodies. Breeding them in captivity isalso a big hurdle. This is why only expert aquarists are recommended to petthem. Even with our care guide, thorough research must be done to healthily petthem.

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