The lined seahorse can be found in aquariums and traditional medicine. They are very good at imitating their habitat. The Lined seahorse (Hippocampus erectus) belongs to the family Syngnathidae and is also called spotted seahorse, seahorse, northern seahorse, and horsefish. They are found in western Atlantic oceans from Canada to the Caribbean, south of Mexico, and Venezuela. Males are distinguished from females by their large bodies and long tails. The lined seahorse practices a monogamous lifestyle with males being the primary caregiver. They have a brawny and upright appearance and also an armor-like body covered in several bony plates. Their names come from the distinct white lines on their neck.