Blue Marble Betta

Blue Marble Betta

The Blue Marble Betta features irregular blue patches over a pale background, creating a painted, marbled appearance. The pictured example shows a mix of light body areas and deeper blue markings extending into the fins. Each fish has its own pattern, making this variety an appealing choice for an aquarium built around one distinctive centerpiece.

Fish details

• Common name: Blue Marble Betta
• Scientific name: Betta splendens (domestic ornamental variety)
• Variety: Ornamental marble-pattern betta
• Size offered: See the selected size option; measurements are approximate.
• Typical adult size: Approximately 5–8 cm; overall length varies with the individual and fin type.
• Water type: Freshwater
• Temperament: Territorial; individual behavior varies.

Aquarium and water care

Choose an established, heated aquarium of at least 5 gallons for one betta; 10 gallons or more offers additional space and water stability. Use gentle filtration, a thermometer, and a secure lid with an air gap. Bettas breathe at the surface, so keep it accessible. Provide smooth resting places near the surface and plenty of plant cover; marble coloration may develop or change as the fish matures.

• Temperature: 76–80°F, kept stable.
• pH: Aim for 6.5–7.5; avoid abrupt adjustments.
• Water quality: Maintain 0 ppm ammonia and nitrite. Test regularly and perform partial water changes with temperature-matched, dechlorinated water.

Feeding

Offer quality, appropriately sized betta pellets as the staple diet. Add variety with small portions of thawed frozen brine shrimp or daphnia. Feed measured portions once or twice daily, remove leftovers, and avoid overfeeding. This carnivorous fish needs prepared or animal-based food; plant roots do not provide a complete diet.

Compatibility

An individual aquarium is the simplest setup. Never keep two males together, and do not house males and females together as a routine display. Peaceful tankmates require a larger aquarium and careful observation. Avoid fin nippers and aggressive fish; small shrimp may be eaten. Be prepared to separate incompatible animals.

Arrival and appearance

Have the aquarium cycled before arrival. Dim the lights, match the transport water temperature, and follow the acclimation instructions supplied with your fish. Transfer carefully without adding transport water to the aquarium. Photographs show the variety; individual color, pattern, and fin shape can differ.