A pet seahorse can be a rewarding marine companion, but keeping one healthy requires more than a pretty tank and good intentions.

These upright swimmers from the genus Hippocampus have unique care needs that set them apart from your average aquarium fish.

Seahorses rely on their prehensile tails and small dorsal fins to navigate, but they aren't strong swimmers. That means tank setup, water quality, and food options matter even more.

Choose the Right Seahorse Species

Not all seahorses are created equal. For beginners, Hippocampus erectus (lined seahorses) are hardy and relatively easy to care for. Dwarf seahorses ( Hippocampus zosterae ) stay under 2 in (5 cm) and can thrive in small tanks, but they demand more attention, especially when feeding.

Avoid wild-caught animals. Ins

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