1. Body Shape: Swordtail guppies have a relatively elongated and slender body shape. They have a rounded belly and a slightly pointed snout.
2. Size: Adult swordtail guppies typically range from 2 to 6 inches (5 to 15 centimeters) in length, with males generally larger than females.
3. Coloration: Swordtail guppies come in a wide variety of colors, including red, orange, yellow, green, blue, and black. They often have intricate patterns and combinations of colors on their bodies and fins.
4. Fins:
- Dorsal Fin: The dorsal fin is located on the back of the fish and is typically triangular or fan-shaped.
- Pectoral Fins: There are two pectoral fins, located on either side of the head.
- Pelvic Fins: There are two pelvic fins, located near the belly.
- Anal Fin: The anal fin is located near the tail and is typically smaller and more rounded than the dorsal fin.
- Caudal Fin: The caudal fin, also known as the tail fin, is the most distinctive feature of the swordtail guppy. In males, the lower part of the caudal fin is elongated and forms a "sword" or extended lobe, giving the fish its name. Females have shorter and rounded tail fins.
5. Sexual Dimorphism: Male swordtail guppies are generally larger and more vibrant in coloration than females. The most noticeable difference is the elongated sword-like tail fin present only in males. Females have shorter, fan-shaped tail fins.
6. Behavior: Swordtail guppies are peaceful, social fish that are known to be active swimmers and jumpers. They enjoy exploring their environment and interact well with other non-aggressive fish in a community aquarium.
Swordtail guppies are widely available and come in various color variations, making them a popular choice for aquarium enthusiasts. Their interesting appearance and hardy nature make them suitable for both experienced and beginner fishkeepers.