American Flag Fish

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The American Flag Fish (Jordanella floridae) is a hardy and eye-catching freshwater fish native to Florida, USA. Named for its distinctive red, white, and blue patterning, this spe cies is especially popular for its bold appearance and algae-eating behaviour. American Flag Fish are best suited to semi-aggressive or species-specific aquariums, as males can become territorial, particularly during breeding. They are adaptable, resilient fish that thrive in well-planted tanks and are well suited to aquarists looking for a unique, characterful species. Physical Characteristics: Adult Size: 5–6 cm Body Shape: Short, robust body Colouration: Males display vibrant red, blue, and white striping Females are duller with olive-brown tones Sexual Dimorphism: Males are more colourful and territorial Females are larger and less brightly coloured Lifespan: 3–4 years Behaviour & Temperament: Temperament: Semi-aggressive, especially males Swimming Level: Mid to upper levels Social Behaviour: Can be kept singly, in pairs, or small groups Territoriality: Males may defend territory during breeding Aquarium Requirements: Minimum Tank Size: 60 litres Water Temperature: 18–26°C pH Range: 6.5–8.0 Water Hardness: 5–20 dGH Water Flow: Moderate Aquascape: Heavily planted with open swimming areas Lighting: Moderate Tank Cover: Recommended Feeding: American Flag Fish are omnivorous with a strong appetite for algae: Algae wafers and spirulina-based foods High-quality flakes or pellets Frozen foods such as brine shrimp and bloodworms Occasional vegetable matter (blanched spinach, zucchini) Feed once or twice daily in small amounts. Compatibility: Good Tank Mates: Suitable Tank Mates: Robust livebearers Larger tetras Rainbowfish Other semi-aggressive community fish Avoid Housing With: Long-finned or slow-moving fish Very peaceful or timid species Special Considerations: Males can be aggressive toward each other Excellent algae grazers but may nibble soft plants Best colour develops in well-fed, well-maintained tanks Cooler water tolerance makes them versatile Show more