Diamond Head Neon Tetra (Paracheirodon innesi)

A selectively bred neon tetra where the iridophore layer responsible for that structural blue stripe spreads up and over the forehead, giving a metallic cap that catches light independently of the body stripe. It's the same light-scattering mechanism behind the classic neon look — stacked guanine crystal plates acting as tiny mirrors, not pigment — just expressed in an unusual spot on the skull. Turn the fish and the cap flashes a different color than the stripe, which is exactly the kind of detail that makes a shoal of these look lit from inside.

Overview

Underneath the jewelry this is still Paracheirodon innesi, one of the most forgiving schooling fish in the hobby and the reason half of us are in it at all. Peaceful to a fault, active in the middle of the water column, and completely uninterested in bothering anything it cannot fit in its mouth — which, at an inch and a half, is nothing you care about. The only real behavioral requirement is company: a neon kept in a group of three is a nervous fish hiding behind your heater, while the same fish in a group of twelve is a confident, tight-schooling display animal. This is not marketing. Shoaling is a predator-defense behavior, and the fish knows perfectly well when it does not have the numbers.

Setup considerations

Wild neons come from soft, tannin-stained blackwater, but decades of captive breeding have made them thoroughly unbothered by ordinary community-tank water — stable matters far more than matched. They show their best color over dark substrate under plants; over white sand in bright light, the fish washes out and so does the point of buying the diamond head form. Fifteen gallons is a sensible floor for a proper group. One honest warning from the shop floor: adult angelfish regard neon tetras as an hors d'oeuvre. They are wild-diet neighbors in the Amazon, and the wild diet is the neon. Plan the community accordingly.

Diet

An omnivore with a mouth the size of this hyphen. Quality micro-pellets or crushed flake as the staple, with frozen baby brine or daphnia when you want to watch the whole school switch on. They feed mid-water and lose interest once food hits the floor — that is what your corydoras are for.

How we sell it

YoCamron Certified stock has finished quarantine in our systems, is treated, observed, and eating prepared food before it ships. Fresh Import is the same fish straight off the truck at a straight-off-the-truck price, for keepers who run their own QT — health not guaranteed, and neon tetras are a species where import stress is a real factor. If this is going in an established display, buy Certified and buy twelve.

Care level: Easy · Temperament: Peaceful, shoaling · Max size: ~1.5" · Min tank: 15 gal · Diet: Omnivore, flake/micro-pellet · Recommended group: 6 minimum, 12 looks like a fish tank