Peacock Eel – Size | Tank | Care | Food | Temperature | Lifespan

Peacock eel

Depending on the place they’re collected from, Peacock Eel is a light brown shade with a skinny pale yellow strip that runs from the attention to the bottom of the tail.

They usually have three to 6 eyespots alongside the higher rear portion of the body that runs alongside the bottom of the dorsal fin which lends to their frequent name “Peacock Eel”.

Peacock eel is an aquarium inhabitant of the Mastacembelidae family. Peacock eels appear to be strange eel in their body form, behavior, and look. Its upkeep at residence isn’t significantly tough however requires some data.

Peacock eel facts

Aquarium Hardiness: Moderately Hardy
Water Conditions: 73-82° F, 6-25 dGH, pH 6.0-8.0
Minimum Tank Size: 35 gallons
Care Level: Moderate
Temperament: Shy, Peaceful
Max. Size: 11.9″
Compatibility: Community
Origin: Southeast Asia
Family: Mastacembelidae
Lifespan: 18 years
Aquarist Experience Level: Intermediate
Color Form: Brown, Tan
Diet: Carnivore


Peacock eels are also referred to as Macrognathus siamensis are, without doubt, one of the most lovely and weird inhabitants of home aquariums. Experienced aquarists have realized to take care of it and create probably the snuggest situations for it.

Peacock Eels have an elongated body, a pointed snout, with each the dorsal and anal fins extending back to their comparatively small caudal fin.

Although females are believed to have fuller bodies, it’s just about not possible to tell apart between sexes, which might be why they haven’t been efficiently bred in an aquarium setting.

Peacock Eels are a largely nocturnal species that inhabit gradual shifting, thickly vegetated areas of rivers and nonetheless waters of flooded fields.

Except for his or her heads, they bury themselves into the sandy or silty substrate throughout sunlight hours and are available out at night to feed on worms, insect larvae, and different small crustaceans.

Because Peacock Eels are delicate to adjustments in water high quality, they’re usually prompt for more skilled tropical fish protecting fanatics. In an aquarium setting, they’re normally fairly shy and take a few weeks before they start to eat on a regular basis.

They require pristine water situations and are delicate to parasites, fungal infections, and the copper primarily based medicines used to remedy these ailments.

Peacock Eels do greatest in a nicely oxygenated 35 gallon or bigger tank with tender, to medium exhausting water.

Because underneath gravel filters improve the oxygen content and scale back the quantity of waste within the tank, many tropical fish protecting fanatics choose to utilize them when housing Peacock Eels.

Although Peacock Eels do nicely in a tank with a medium to small grain gravel substrate over an underneath gravel filter; a sandy substrate with a canister filter that gives a water turnover of 10 to 15 instances per hour is preferable.

Regardless of which filtration system you employ, a good becoming lid is necessary for these escape artists.

Since Peacock Eels are more energetic in a dimly lit aquarium, it’s a good suggestion to supply them with loads of floating vegetation to diffuse the light within the tank.

They take pleasure in burrowing within the backside, so sand or fantastic gravel substrate is beneficial together with a lot of rocky caves, driftwood roots, and potted vegetation for them to cover amongst.

Much tropical fish protecting fanatics simply place a bit of PVC pipe into their tank for them to retreat into, in lieu of a rocky cave.

If you give them a number of locations for them to cover, they really feel safer and be more seen throughout sunlight hours.

Macrognathus siamensis is a shy, peaceable species that will get alongside nicely in a community tank setting with all kinds of fish bigger than themselves together with their very own variety, offering they’re of the identical approximate size.

Peacock eel Brief description

Dorsal spines (total): 13 – 19; Dorsal tender rays (total): 53; Anal tender rays: 49; Vertebrae: 75. Distinguishable by its dorsal backbone relies on 13-19 and a sequence of 3-6 conspicuous ocelli alongside the bottom of the tender dorsal fin.

The ocelli alongside the bottom of the dorsal fin are a lot bigger than these in M. aral and the dorsal and caudal fins lack the fantastic striations seen in M. aral and M. meklongensis. Dorsal, caudal, and anal fins not fused.

Peacock eel Appearance

Peacock eel has a long and elongated body, like a snake. At its end is a small and rectangular head. In the wild, Peacock eels can develop as much as 40 cm long, and in an aquarium, they develop solely as much as 25 centimeters. The higher body is roofed with many spikes which might be used to guard in opposition to natural enemies.

As a rule, females are barely bigger in size than males. Individuals of each sex have anal and dorsal fins, which create a similarity to the tail.

Depending on environmental situations, their shade might range from light brown to red. On the dorsal fin, small darkish spots are clearly seen, that are surrounded by a golden rim. This kind of aquarium eel has no pectoral fin.

The body of the peacock eel is erratically colored as you will discover brown, olive, or light red shades.

The sides of the eel are lined with a blurry pattern, and the top and trunk are strewn with yellowish spots. The stomach has a more uniform shade and is far lighter than all different components of the body.

Peacock Eels are spiny eels, and though they haven’t been bred in an aquarium setting, it’s presumed that they breed in the identical method as different spiny eels.

Emulating the flooding situations encountered through the wet season of their natural habitat is believed to stimulate breeding behavior. Feeding a pair of higher-high-quality stay meals and offering them a steady inflow of fresh water can also be believed to advertise breeding behavior.

If a pair decides to spawn, they are going to exhibit a sort of courtship ritual the place they chase one another round in circles till breeding truly happens. Their sticky eggs are deposited amongst floating vegetation and can usually hatch within Three or four days.

The fry is free-swimming in just a few more days and might be fed child brine shrimp. Like their parents, the fry is prone to fungal infections and would require frequent regular water adjustments.

A layer of Indian Almond Leaves within the breeding tank will support significantly the prevention of illness.

Peacock Eels are nocturnal carnivores that feed on insect larvae, crustaceans, small fishes, and worms.

In an aquarium setting, all spiny eels choose a diet of stay or freshly frozen meals comparable to brine shrimp, earthworms, blackworms, small guppies, or bloodworms.

Although some spiny eels might be skilled to eat freeze-dried brine shrimp, Tubifex, or bloodworms, don’t rely on it whenever you buy one.

Feed Peacock eels after you flip off the lights on their aquarium and solely a few times per week. Many will solely settle for meals as soon as every two or three weeks.

The Peacock Eel is usually obtainable to tropical fish protecting fanatics on-line and within the aquarium commerce at cheap costs.

Peacock eel Habitat

This uncommon eel is sort of demanding of environmental situations. Because of this, it’s hardly ever discovered within the wild and lives solely in just a few Asian nations.

On different continents, you will discover peacock eels solely in an aquarium with particular dwelling situations. In the natural setting, This consultant of the fauna is discovered within the waters of:

Sri Lanka;

This fish prefers to settle in small rivers and lakes with recent water.

Peacock Eel Maintainance and Requirement

The upkeep of the Peacock eel could cause loads of trouble to the owner. The essential requirement might be to create pet optimum situations within the aquarium and supply it with a selected feed.

To hold your peacock eel snug at residence, you need to attempt to recreate its natural dwelling situations. Only in this case the fish might be wholesome, robust, and have a gorgeous look.

Proper care entails fast reproduction. Given the worth and high value of this consultant of the aquatic fauna, the owner is guaranteed revenue from the sale of offspring.

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Peacock eel Feeding

Peacock eels are very capricious in selecting meals, so their day-by-day diet must be assorted and tailored to the preferences of every explicit particular person. Often there are conditions when this fish eats any meals with pleasure, and the next day utterly refuses it.

The basis of the diet of peacock eel is the next goodies:

mosquito larvae;
small fish.

Peacock eel won’t refuse cod fillet, in addition to squid meat. As a further top dressing, you need to use fortified dry meals or high-quality frozen merchandise.

Food preferences might range relying on the temper of the pet. If he’s dissatisfied with the created situations, then there’s a chance of a whole rejection of meals. In this case, you need to supply him with probably the most favorable deal.

Caring and Maintenance of Peacock eel

As a “house” eel, you need to take a big aquarium with a tight-fitting lid. For one particular person, a tank quantity of no less than 100 liters is required.

The soil should be present within the aquarium. It ought to be poured with a thick layer to the underside of the tank and attempt to keep away from different sharp components. This is finished in order that the peacock eel can simply do his favorite factor – dig into the ground.

It is beneficial to plant loads of green vegetation with a robust root system. If you can’t discover or purchase it, you need to use the strategy of planting in particular pots. This will assist vegetation to resist contact with massive inhabitants.

Peacock eels need to eliminate the mucus that varieties on the floor of their body, so massive stones should be present within the aquarium. Before placing them into the container, they have to first be sanded, which is able to defend the eel from any accidents.

In the wild, Peacock eels stay close to the coast, the place there are a lot of completely different tree roots, algae, and snags, so it’s endorsed so as to add these elements to the aquarium. However, it’s value doing this moderately, as extreme use can result in an inadequate free area for swimming.


Found at backside depths in slow-moving or standing waters. Often lies buried within the silt, sand, or fantastic gravel with solely a portion of its head protruding from the underside.

Enters flooded the forest. Emerges at nightfall to forage for meals. Feeds on benthic insect larvae, crustaceans, and worms. Marketed recent and sometimes seen within the aquarium commerce.

Peacock eel Aquarium Conditions

Peacock eels require a particular method and the examination of fundamental upkeep guidelines. The owner wants to think about a lot of components that contribute to the formation of snug situations.

Among them are the next:

Constant monitoring of the purity of water and its high quality.

Periodic substitute of a 3rd of the water with a brand new one. This ought to be achieved no less than as soon as per week.

Salting water and sustaining the required level of salinity.

Providing good filtration and aeration of the aquarium.

The temperature of the aquatic setting ought to range from 21 to 26 degrees above zero.

The pH ought to be restricted to 7 and hardness to 15.

Provide dim lighting, which is typical of natural dwelling situations. At night, it’s best to scale back the brightness or flip off the light utterly.

Peacock eel Breeding

The puberty of peacock eel happens at the age of three years, however, they reproduce very poorly at residence. To do that, you need to hold out particular injections to stimulate the process.


Just a few days before the start of the process, the fish are stored in separate tanks of 250 liters or more.

One or two males are stored for one feminine.

An injection is injected into the spinal muscle.

The fish tank is removed from the light.

In full darkness, the feminine lays as much as 1 thousand eggs. They sink to the ground, the place they develop their eggs over the next 3 days.

After this time, fry is born. They need to supply a temperature of 26–28 ° C and a considerable amount of microscopic meals. You can feed them with plankton or micro worms.

Once they attain one-third of the size of their parents, they are often moved to a typical aquarium.

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During his life in captivity, the peacock eel is confronted with many issues that may trigger one or one other illness. Almost all of his diseases are related to situations of detention and feeding.

The essential health issues of peacock eel are:

Skin ailments: These are the most typical illnesses that seem as a result of the lack of a considerable amount of soil on the backside of the aquarium. Without it, fish can not utterly bury and endure from publicity to natural light and high temperatures.

During the therapy interval, you need to steadily elevate the temperature of the water within the aquarium to 32 degrees and improve the salinity to 10%. In addition, particular preparations are added to the water that may be purchased at any pet retailer.

Peacock eel is a superb consultant of the aquatic fauna that wants particular care and upkeep.

With the right method to business and following all of the suggestions of skilled aquarists, you can’t solely present snug situations to your pets but additionally contribute to their reproduction.

Peacock eel Tank Mates

The compatibility of peacock eel with different fish doesn’t trigger issues for aquarists. Despite capriciousness, Peacock eels are very pleasant and peaceable.

However, resulting from its size, eels can by accident hurt neighbors and prick them with spikes on their backs. Such contact can end for any fish is probably the most deplorable manner.

You can hold Peacock eels with guppies, swordtails, rainbowfish, gourami, and so forth.

To keep away from this, you could contemplate the compatibility guidelines:

You shouldn’t hold peacock eels together with small and quick fishes, as he can take them for prey and swallow.

It is beneficial to mix aquarium eels with the underside species of fish, which result in a measured and inactive life-style.

The best tank mate could be a massive and energetic fish.

You shouldn’t hold cichlids in an aquarium with peacock eels. They are aggressive, transfer in a short time, and may trigger severe damage.

You shouldn’t hold a lot of eels in a single tank. During breeding, conflicts amongst males can come up that may develop right into a struggle with one another inflicting severe damage. In addition, the reason for the quarrel could also be a wrestle for territory.

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