Figure 8 Pufferfish (Tetraodon biocellatus)

Overview
The Figure 8 Pufferfish, also known as the "two-spotted puffer" or "biocellatus puffer," is a charming and active freshwater species that’s a favorite among aquarium enthusiasts. Native to Southeast Asia, this species is found in brackish waters of rivers, streams, and coastal areas. The Figure 8 Puffer is particularly admired for its distinctive appearance, which includes two prominent spots on its body that resemble the number "8." Its small size and curious nature make it a great choice for aquarists with intermediate experience.

These fish are playful, intelligent, and require specific care, including the right water salinity and tank mates, to thrive in captivity.

Key Features:

• Scientific Name: Tetraodon biocellatus
• Common Names: Figure 8 Pufferfish, Two-Spotted Puffer, Biocellatus Puffer
• Place of Origin: Southeast Asia (Borneo, Sumatra, and surrounding areas)
• Adult Size: 3-4 inches
• Lifespan: 5-7 years with proper care

Appearance:
The Figure 8 Pufferfish is a small, round fish with a highly distinctive look. Its body is a light tan to yellowish color with two dark spots near the midsection, which gives it the "Figure 8" appearance. Its pufferfish nature allows it to inflate when threatened, making it appear even more bulbous. The puffer’s eyes are large and prominent, adding to its expressive face.

Care Requirements:

1. Tank Size:
   • A minimum of 30 gallons for a single Figure 8 Puffer is ideal, as they require adequate swimming space and a slightly larger tank for long-term health.
   • A brackish tank is necessary, as these pufferfish come from brackish environments in the wild.
2. Water Parameters:
   • Temperature: 75-80°F
   • pH: 7.0-8.0
   • Salinity: Light to moderate brackish water (specific gravity of 1.005 to 1.010)
   • Hardness: 8-12 dGH
3. Diet:
   Figure 8 Puffers are carnivorous and require a varied diet of high-protein foods:
   • Frozen or live foods such as brine shrimp, bloodworms, and daphnia
   • Small snails (which help wear down their constantly growing teeth)
   • High-quality sinking pellets or flakes formulated for carnivores
   • Occasionally, pieces of fish or shrimp
4. Tank Setup:
   • Substrate: Fine sand or smooth gravel is recommended to avoid injury to their sensitive undersides.
   • Decorations: Include rocks, caves, and plants for hiding spaces and enrichment. A well-planted tank with driftwood will also help mimic their natural environment.
   • Filtration: A strong filtration system is needed, but ensure water flow isn’t too strong as this species prefers calmer waters.

Behavior and Compatibility:
The Figure 8 Puffer is an inquisitive and active fish that enjoys exploring its environment. While they are peaceful for the most part, they can be territorial, especially when it comes to food. They are also known to be aggressive toward smaller fish, which may be seen as prey.

Ideal Tank Mates:

• Other peaceful brackish species like Scats, Monos, and some larger gobies
• Larger, slow-moving fish that can hold their own but won’t be aggressive toward the puffer
• Avoid small or delicate fish, as they may be attacked or eaten

Special Notes:

• Dental Care: Figure 8 Puffers have teeth that grow continuously. Providing hard-shelled foods, like snails, helps wear down the teeth and prevent them from overgrowing.
• Inflation: These fish are well-known for their ability to puff up when threatened. While it is a natural behavior, it should not be encouraged, as excessive inflation can cause stress.
• Aquarium Maintenance: Regular water changes and careful monitoring of salinity levels are critical to maintaining the health of the Figure 8 Puffer.

Why Choose a Figure 8 Pufferfish?
The Figure 8 Pufferfish is a perfect choice for aquarists looking for a unique, intelligent, and visually interesting addition to a brackish tank. Its distinctive appearance, interactive behavior, and moderate care requirements make it a fascinating and rewarding species to keep.

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Add the delightful and curious Figure 8 Pufferfish to your aquarium today! Perfect for a brackish community tank with the right companions.