Tank-Raised Black Ghost Knife

Tank-Raised Black Ghost Knife

2.5"
$8.99
Sale price  $8.99 Regular price 
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Tank-Raised Black Ghost Knife

Tank-Raised Black Ghost Knife

$8.99
Sale price  $8.99 Regular price 
Size2.5"

Beyond navigation, the electric field this knife fish generates doubles as a kind of identity signal — each individual’s discharge carries a slightly different frequency signature, letting knife fish potentially recognize each other electrically the way we’d recognize a voice. Tank-raised stock like this skips the stress of wild collection and shipping, generally settling into a new tank and routine faster than wild-caught individuals. A good pick for New Milford-area keepers who want a calmer transition to their new home.

Care level: Moderate · Temperament: Peaceful, territorial with own kind · Max size: ~18" · Min tank: 100+ gal (adult) · Diet: Carnivore, live/frozen foods

When it ships

Most non-quarantined stock goes out the week you order. If we do not already have the animal in-house we source it first — allow up to two weeks for it to reach us.

The live guarantee

Shipped: a 1-hour DOA window from confirmed delivery, and nothing beyond it. In-store pickup: 24 hours, if you bring a water sample from your aquarium and we test it before the animal goes home. Maintenance clients: 60 days when we service the aquarium at least twice a month, 28 days on a monthly plan.

Read the full guarantee →

Expert guidance

Have a question about this piece?

Cameron draws on 25+ years in the hobby and a marine biology background to help you choose the right fit for your system.

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