Yellow Watchman Goby (Cryptocentrus cinctus) — photo: OpenCage, CC BY-SA 2.5, via Wikimedia Commons

Lightly Medicated | Yellow Watchman Goby

Medium/Large
$43.99
Sale price  $43.99 Regular price 
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Yellow Watchman Goby (Cryptocentrus cinctus) — photo: OpenCage, CC BY-SA 2.5, via Wikimedia Commons

Lightly Medicated | Yellow Watchman Goby

$43.99
Sale price  $43.99 Regular price 
Size

What “Lightly Medicated” means

This is the same animal as our non-quarantined listing, held briefly in our systems and given one short prophylactic course — a light treatment for ich and for internal and external worms — then observed eating in front of us before it goes home.

A light course knocks the parasite load down. It does not guarantee full removal, and we will not pretend otherwise. Ich is only killed in its free-swimming stage, and a short treatment window can miss cysts entirely; worm burdens can survive a single dose. Clearing an animal takes the full quarantine window — 40 to 90 days depending on the species — which is exactly what the Quarantined listing is for. This tier buys you a lower parasite load and a fish we have watched eat, not a cleared animal.

We condition the fish on our end. Every animal we medicate is brought back onto prepared food on our own systems and is eating before it leaves — in practice it is rare for a lightly medicated fish to ship out and arrive sick. Do the same at your end: get it eating in your aquarium before you count it settled.

When it ships

Plan on 5–7 days on our systems for the treatment course, and it does not leave until it is eating. If the animal is not already in our systems we source it first — allow up to two weeks for it to reach us before that clock starts. From the day you order, plan on roughly three weeks in total.

The guarantees

  • Shipped orders: 24-hour live guarantee from confirmed delivery.
  • In-store pickup: 7-day live guarantee — bring a water sample from your aquarium so we can test it before your livestock goes home with you.

Want the full program — treated, observed, confirmed eating, and covered for 28 days on pickup? That is the Quarantined listing. Run your own quarantine and just want the fish this week? The non-quarantined listing is cheaper still. The whole ladder is explained in Quarantined vs Non-Quarantined.


Yellow Watchman Gobies keep a fin permanently in contact with their roommate: a nearly blind pistol shrimp that excavates and maintains their shared burrow while the goby, with working eyes and nothing better to do, keeps watch overhead. One flick of that fin and the shrimp bolts for cover, no verbal negotiation required. It’s one of the cleanest examples of interspecies teamwork on the reef, and also just a genuinely easy, hardy fish to keep.

Care level: Easy · Temperament: Peaceful · Max size: ~3" · Min tank: 20 gal, sand bed required · Diet: Carnivore, meaty foods

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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