Lightly Medicated | Skilletfish

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.

Gobiesox strumosus, the Skilletfish, is a North American coastal native and a member of the clingfish family — not a blenny, despite the flat-headed bottom-hugging appearance. The distinguishing feature is a muscular suction disc formed from fused, modified pelvic fins that lets this fish lock onto rock, glass, and hard substrate with considerably more grip than its small size suggests. In the wild they occupy rocky intertidal and estuarine zones along the Atlantic coast, clamped against substrate in surge zones and picking off small crustaceans and invertebrates.

In a reef tank, they’re genuinely reef-safe oddball fish: completely benign toward corals and most invertebrates, and well-behaved with fish they can’t fit in their mouth. They hunt small crustaceans and amphipods, so ornamental shrimp smaller than about a half inch aren’t fully safe — but snails, hermit crabs, and anything of meaningful size are unbothered. Most of their activity happens at odd hours; during the day they’re typically parked on glass or rock using that suction disc, which is exactly where they’re most entertaining to watch.

Feed frozen mysis, small meaty foods, or pieces of silversides. They’re not aggressive surface feeders but will pick frozen off the bottom readily once settled in.

Scientific name: Gobiesox strumosus
Origin: Western Atlantic coast — estuaries, rocky intertidal zones, and brackish coastal habitats from New England to Florida
Water parameters: Temp 64–80°F · Salinity 1.020–1.025 · pH 8.1–8.4
Tank requirements: 20 gal minimum; prefers rock and rubble with vertical surfaces to cling to
Diet: Carnivore — frozen mysis, small meaty foods; picks prepared food off the bottom
Compatibility: Reef safe; peaceful with fish too large to eat; small shrimp at risk
Husbandry note: Acclimate slowly — these are estuarine fish tolerant of some salinity variation in the wild, but they need stable reef parameters in captivity. Keep the suction disc area free of sand for healthy adhesion to glass.