Figure Eight Pufferfish - Tetraodon biocellatus Fish Profile & Care Guide
Introduction
The Figure Eight Pufferfish (Tetraodon biocellatus) is a captivating species of freshwater pufferfish found primarily in Southeast Asia's slow-moving rivers and estuaries. Renowned for its distinctive body pattern, this species is popular among aquarium enthusiasts. These Pufferfish are known for their vibrant personality and unique interactive behaviours. The species requires specific care due to its specialized diet and sensitivity to water quality, making it an intriguing challenge for dedicated aquarists. With its engaging presence and striking appearance, the Figure Eight Pufferfish adds both aesthetic and dynamic intrigue to a well-maintained aquarium setting.
Figure Eight Pufferfish, while generally peaceful compared to other members of the Tetraodontidae family, are ideally suited for species-specific aquariums. Nevertheless, they can coexist successfully with other fish in sufficiently large, well-designed tanks. Suitable tankmates include short-finned and fast-swimming species such as Barbs, Rasboras, and Characins. Despite this compatibility, the distinct personality traits of Pufferfish can lead to variable interactions, necessitating careful observation. Housing multiple specimens together is possible in spacious environments if they are introduced simultaneously; however, in more confined spaces, fin-nipping may occur among them.
The optimal water conditions for maintaining this species, whether in fresh, brackish, or marine environments, remain debatable. While high KH freshwater conditions may suffice for juveniles, older specimens often benefit from adding salt, indicated by a darkening from white to black in the ventral region. The aquarium should be equipped with robust plants and rock formations to provide shelter and territories alongside a considerable open swimming area in the centre. Due to their messy eating habits and sensitivity to organic pollutants, robust filtration and consistent maintenance are crucial to ensure high water quality and oxygenation.
Aesthetically, the Figure Eight Pufferfish exhibits a dark brown to green dorsal surface with a white underside adorned with numerous yellow lines and spots. Variability in these markings adds to their visual appeal. Additionally, a few distinctive black spots surrounded by yellow are located on the tail, body, and nose. The markings near the caudal fin, resembling the number eight or eye-spots, contribute to their common name and distinctive appearance.
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Photos
Sexual Dimorphism
Determining the sex of Figure Eight Pufferfish through external characteristics is exceedingly challenging, as there are no distinct morphological differences readily observable. However, it is generally noted that adult females tend to be larger in size compared to their male counterparts.
Quick Facts
| Scientific Name | Tetraodon biocellatus |
|---|---|
| Year Described | 1885 |
| Other Names | Eyespot Puffer |
| Kingdom | Animalia |
| Classification | Actinopterygii |
| Order | Tetraodontiformes |
| Family | Tetraodontidae |
| Genus | Tetraodon |
| Origins | Malaysia Cambodia Indonesia |
| Approx Max Size | 8 cm |
| Temperament | Semi-Aggressive |
| Aquarium Level | All Levels |
| Difficulty | Intermediate - Advanced |
| Shoaling | No |
| Best kept as | Groups 6+ |
| Diet & Feeding | Molluscivore |
| Reproduction | Egg Depositor |
| Average Lifespan | Up to 8 Years |
Water Parameters
| Water Type | Freshwater/Brackish |
|---|---|
| pH | 6.5 - 7.5 |
| GH | 5 - 20 |
| KH | 4 - 8 |
| ℉ | 72 - 79 |
|---|---|
| ℃ | 22 - 26 |
Natural Habitat
The Figure Eight Pufferfish is native to Southeast Asia and is found explicitly in the lower Mekong River in Cambodia, Peninsular Malaysia, and the regions of Sarawak and Kalimantan on the island of Borneo. This species predominantly inhabits rivers and coastal waters, displaying a preference for freshwater environments. However, it is also frequently encountered in brackish conditions, demonstrating its adaptability to varying salinities. This geographical and environmental versatility highlights the ecological resilience of the Figure Eight Pufferfish.
Breeding
Reproduction of the Figure Eight Pufferfish in domestic aquariums is notably infrequent. It is observed that during spawning, eggs are dispersed among the foliage of aquatic plants. Subsequently, the male assumes the role of guardian, vigilantly overseeing the eggs until they hatch.
Diet & Feeding
The diet of Figure Eight Pufferfish should be carefully managed to replicate its natural feeding habits and ensure its health. This species thrives on a varied diet that includes crustaceans, molluscs, and worms. To maintain the health of their teeth, which continuously grow, it is essential to provide hard-shelled food items such as snails and crustaceans, which help wear down their teeth naturally. Additionally, supplementing their diet with high-quality frozen or live foods such as brineshrimp, bloodworms, and blackworms can provide necessary nutrients and enrichment. Consistent dietary variety not only supports the nutritional needs of Tetraodon biocellatus but also contributes to their overall well-being and longevity in a captive environment.
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Published: 26 Apr 2024
Last Updated: 26 Apr 2024