Complete Guide to Siamensis Spiny Eel (Spot-Fin) Care for Australian Aquarists

Introduction to Siamensis Spiny Eel (Spot-Fin)

Freshwater Spiny Eels, also known as Macrognathus siamensis are a unique and intriguing group of fish known for their elongated bodies and spiny dorsal fins. These eels can be an exciting addition to your Australian aquarium. This guide will explore how to care for Freshwater Spiny Eels in your aquarium. They are quite unique and are often found buried in the silt, sand, or fine gravel with only a portion of its head protruding from the bottom. They are also called peacock eels from their distinctive markings but they can also be known as the Spot finned spiny eel or even the Siamese spiny eel. These fish will grow up to almost 12 inches (30 cm) in length and generally have a life span of about 8 – 18 years so think of them as a long-term investment.

Origin

These kind of eels are native to the Mekong and Chao Phraya basins, which make up the countries of Thailand, Cambodia, Laos, and Vietnam. They are found in slow-moving backwaters with a sandy or muddy bottom, such as swamps, canals, and ponds.

Tank Requirements

Due to their size and active nature, freshwater spiny eels require spacious tanks. A tank size of at least 200 litres or more is recommended. To mimic their natural habitat, provide plenty of hiding spots in the form of caves, PVC pipes, and driftwood.

Water Parameters

Maintaining stable water conditions is crucial for Freshwater Spiny Eels. They prefer slightly acidic to neutral water with a pH level ranging from 6.0 to 7.0. Keep the water temperature between 24°C to 28°C (75°F to 82°F). Regular water changes and efficient filtration are necessary for water quality.

Diet and Nutrition

Spiny Eels are carnivorous and enjoy a diet of meaty foods. Offer them a variety of live or frozen foods like bloodworms, brine shrimp, and small fish. They may also accept high-quality sinking pellets. Feeding them a varied diet is essential for their health and growth.

Compatibility with Other Fish

Spiny Eels can be peaceful but may eat smaller fish that can fit into their mouths. When selecting tankmates, choose fish that are too large to be considered prey. Avoid keeping them with aggressive or fin-nipping species.

Behavior and Tank Setup

Spiny Eels are nocturnal and prefer low lighting. Despite its carnivorous nature, the fish is peaceful, shy, and keeps to itself. These eels are compatible with their own species, as long as the tank isn’t overcrowded. Dim lighting, floating plants, and hiding spots help these fish feel safe and secure. The fish often uproot plants and decorations by their habitual burrowing. Be sure that your aquarium has no gaps at the top, as these ees are great Houdinis (aka magical escape artists!). They are not aggressive, but adults are capable of taking small fish overnight, so tankmates must be chosen with care. To prevent injury to their delicate bodies, provide a well-decorated tank with hiding places and smooth substrate. These eels may occasionally burrow into the substrate, so choose a suitable substrate type.

Conclusion

Caring for Freshwater Spiney Eels in your Australian aquarium can be a rewarding experience. By maintaining the right tank conditions, offering a meaty diet, and providing suitable tankmates, you can enjoy these captivating eels’ unique and fascinating nature in your aquatic setup.