A sleek and active tetra with a torpedo-shaped body, perfect for larger planted aquariums.
Overview
Iguanodectes geisleri, commonly known as Geisler's Pike Tetra, is a streamlined and fast-moving fish. Native to South America, it inhabits clear, fast-flowing streams. Its sleek, torpedo-shaped body and reflective silver coloration make it a stunning addition to larger aquariums.
Tank Requirements
These tetras require a tank of at least 120 liters with ample swimming space. The water should be kept at temperatures between 24–28°C, a pH of 6.0–7.5, and hardness levels of 3–12 dGH. Aquariums should be well-planted along the sides and back, with open areas for swimming. Good water movement and high oxygen levels are essential, mimicking their natural habitat.
Feeding and Diet
Geisler's Pike Tetras are omnivores and thrive on a varied diet. Feed them high-quality flakes or pellets, along with live or frozen foods such as brine shrimp, daphnia, and bloodworms. They also appreciate occasional vegetable-based foods like spirulina flakes or blanched spinach.
Care and Maintenance
This species requires clean, well-oxygenated water with regular water changes. They are relatively peaceful but can be somewhat timid if kept in small groups, so a school of at least six individuals is recommended. Monitor water parameters carefully, as they are sensitive to poor water quality.
Compatibility
Geisler's Pike Tetras are peaceful and suitable for community tanks with other non-aggressive species. Good tankmates include other tetras, rasboras, and dwarf cichlids. Avoid larger, predatory fish that might see them as prey.
Breeding
Breeding Iguanodectes geisleri in captivity is challenging and rarely reported. A separate breeding tank with soft, acidic water and dim lighting may encourage spawning. Condition the fish with live foods, and provide fine-leafed plants or spawning mops for egg deposition. The eggs are adhesive and will hatch in about 24–36 hours. The fry should be fed infusoria or liquid fry food initially, progressing to baby brine shrimp as they grow.