Denison Barb: Fish Species Profile

Characteristics

• Scientific Name: Sahyadria denisonii
• Family: Cyprinidae
• Origin: Western Ghats, India
• Social Behavior: Peaceful, schooling fish
• Tank Level: Middle regions
• Minimum Tank Size: 55 gallons
• Diet: Omnivore
• Breeding Method: Egg layer
• Care Level: Intermediate
• Preferred pH Range: 6.5 to 7.8
• Water Hardness: 5 to 25 dGH
• Temperature Range: 72 to 77°F (22 to 25°C)

Origin and Distribution

Denison Barbs, also known as Roseline Sharks, are native to the fast-flowing rivers and streams of the Western Ghats in India. These environments are characterized by clear waters with abundant vegetation and rocky substrates, providing a natural habitat that supports their active lifestyle.

Colors and Markings

Denison Barbs exhibit a striking appearance with a silver body adorned by a prominent black horizontal stripe running from the snout through the eye to the tail. Above this black stripe, a vivid red line extends from the nose to the midpoint of the body. Their dorsal fin often displays a red coloration, while the caudal fin features a combination of yellow and black markings, adding to their vibrant and dynamic look.

Tankmates

Due to their peaceful nature, Denison Barbs are well-suited for community aquariums. Compatible tankmates include:

• Other barbs (e.g., Cherry Barbs, Rosy Barbs)
• Danios
• Rainbowfish
• Larger tetras
• Corydoras catfish

It’s advisable to avoid housing them with aggressive or significantly larger species that may exhibit territorial behavior or view them as competition.

Care

Denison Barbs are active swimmers that require ample space and a well-maintained environment. Key care considerations include:

• Tank Size: A minimum of 55 gallons is recommended to accommodate their schooling behavior and provide sufficient swimming space.
• Water Parameters: Maintain stable water conditions within the preferred ranges. Regular water changes and efficient filtration are essential to keep ammonia and nitrate levels low.
• Tank Setup: Provide a well-planted aquarium with open areas for swimming. Incorporate rocks and driftwood to mimic their natural habitat and offer hiding spots.
• Group Size: Keep them in groups of at least six to promote natural schooling behavior and reduce stress.

Diet and Feeding

As omnivores, Denison Barbs thrive on a varied diet. Offer high-quality flake or pellet foods as a staple, supplemented with live or frozen options such as bloodworms, brine shrimp, and daphnia. Incorporating vegetable matter, like blanched spinach or spirulina-based foods, can also benefit their health. Feed them small amounts multiple times a day, ensuring they consume all the food within a few minutes to prevent overfeeding and maintain water quality.

Gender Differences

Distinguishing between male and female Denison Barbs can be challenging, as they exhibit minimal sexual dimorphism. Males may display slightly more intense coloration and a slimmer body profile, while females tend to be slightly larger with a rounder abdomen, especially when carrying eggs.

Breeding

Breeding Denison Barbs in captivity is considered challenging and is rarely achieved in home aquariums. They are egg layers, and successful breeding often requires specific conditions that are difficult to replicate, such as precise water parameters and environmental cues. As a result, most Denison Barbs available in the aquarium trade are wild-caught or bred in specialized facilities.

Further Research

For more detailed information on Denison Barb care, breeding techniques, and tank setups, consider exploring specialized aquarium literature or consulting with experienced aquarists.

FAQ

How many Denison Barbs should I keep together? It’s recommended to keep them in groups of at least six to promote natural schooling behavior and reduce stress.

Are Denison Barbs suitable for beginners? While they are relatively hardy, their need for spacious tanks and stable water conditions makes them more suitable for aquarists with some experience.

Can Denison Barbs live with betta fish? Due to their active nature and size, they may not be ideal tankmates for bettas, which prefer calmer environments. It’s advisable to avoid this combination.

This profile provides an overview of Denison Barbs, highlighting their care requirements and characteristics to assist aquarists in maintaining a healthy and vibrant aquarium.