Freshwater Dolphin Fish (Marcusenius . 8-10cm

Freshwater Dolphin – A Sleek and Intelligent Aquarium Species

The Freshwater Dolphin, scientifically known as Marcusenius sp., is an intriguing and intelligent fish native to African river systems. Named for its dolphin-like snout and graceful swimming, the Freshwater Dolphin captivates aquarists with its active behaviour and subtle silvery sheen. This species is well-suited for intermediate to advanced hobbyists looking to add a unique touch to their freshwater aquariums.

Size and Lifespan

Freshwater Dolphins typically reach a length of 15–20 cm when fully grown. With optimal care, their lifespan ranges from 8 to 10 years. To ensure longevity, maintain pristine water conditions and provide a balanced diet. A stress-free environment with consistent tank maintenance will significantly enhance their health.

Ideal Tank Setup

A minimum tank size of 200 litres is recommended for housing a Freshwater Dolphin. Use a soft, sandy substrate to mimic their natural habitat. Include driftwood, smooth rocks, and sturdy plants to provide hiding spots and enrich their environment. These fish prefer subdued lighting and moderate water flow. Ideal water parameters include a pH of 6.5–7.5, temperature between 24–28°C, and soft to moderately hard water.

Compatible Tank Mates

The Freshwater Dolphin is semi-aggressive and best kept with similarly sized, peaceful to mildly assertive species. Suitable companions include Congo Tetras, Synodontis Catfish, and larger Barbs. Avoid small, delicate fish or aggressive cichlids that may provoke stress or conflict. Keep them in groups of three or more to reduce territorial behaviour.

Feeding and Nutrition

Freshwater Dolphins are carnivorous and thrive on a varied diet. Offer high-quality sinking pellets, supplemented with live or frozen foods such as bloodworms, brine shrimp, and daphnia. Feed once or twice daily in small portions to prevent overfeeding and water contamination. Occasional treats will help maintain their vibrant energy and health.

Breeding and Behavior

Breeding the Freshwater Dolphin in captivity is rare and challenging due to their specific requirements. They exhibit mild sexual dimorphism, with females typically appearing rounder. These fish are intelligent and display fascinating behaviour such as using electric fields to navigate and communicate. They are most active during twilight hours and appreciate a structured yet spacious tank.

Species Overview

• Species: Marcusenius sp.
• Common Name: Freshwater Dolphin
• Origin: African river basins
• pH Range: 6.5–7.5
• Temperature: 24–28°C
• Maximum Size: 20 cm
• Diet: Carnivorous
• Minimum Tank Size: 200 L

FAQs

How large do Freshwater Dolphins grow?
They grow up to 20 cm, making them ideal for large community tanks.

Can I keep a single Freshwater Dolphin?
While possible, it’s best to keep them in small groups to encourage natural behaviour.

Are Freshwater Dolphins aggressive?
They are semi-aggressive and should be housed with compatible tank mates.

What do Freshwater Dolphins eat?
They prefer a carnivorous diet of sinking pellets, live, and frozen foods.

Is it easy to breed Freshwater Dolphins?
Breeding in captivity is difficult and rarely successful without specialised setups.

Enhance your aquarium with the elegance and intelligence of the Freshwater Dolphin. Bring home a fascinating species that offers both beauty and personality today!