One small container, one scarlet badis
A small rigid container with a secure lid suits a scarlet badis best for a short trip to a specialist, and it should hold one male on his own. A scarlet badis is barely an inch of fish, intensely territorial toward other males despite that size, and two males sealed into one travel tub can spend the drive displaying, chasing, and nipping in a space with no retreat. A small container also suits a single badis physically: less water sloshing around a very light body, less distance to be thrown, and a volume the specialist can inspect at a glance. Fill it with the fish's own tank water, leave a modest air space, and choose a tub with smooth walls and a lid that clicks firmly rather than resting loose.
Cover is the difference between hiding and panicking
A scarlet badis in bare water is a fish stripped of its whole coping method, which is to slip into plants and vanish. Add a soft plant stem, a small leaf, or a tuft of moss from its own tank and the same container becomes a thicket the badis can press into, colour up against, and ride out the journey beside. That cover should be soft and anchored by its own slight weight, not a hard ornament that could roll onto a fish this small, and not so much plant that the specialist cannot find the badis without emptying the tub. Outside the container, darkness does the rest of the work: a towel-wrapped tub inside a closed bag tells a shy fish that nothing is approaching, and scarlet badis travelled this way often arrive with their red barring still visible instead of drained to grey.
A capture measured in patience, not speed
Catching a scarlet badis by pursuit through a planted tank can take longer and cost the fish more than the drive itself. Rest a small clear cup near the thicket the badis favours, wait for it to inspect or drift over the cup in its own time, and tilt the cup gently so water carries it in; a soft net used as a slow backdrop helps, but a net closing fast from above triggers the dart-and-freeze response that ends with a fish wedged in plant roots. Transfer cup and fish straight into the travel container in one motion, settle the plant cover beside it, and seal the lid. Feed nothing that morning, since a badis that hunts live foods may refuse travel-day food anyway and uneaten food only fouls a very small volume of water.
Small fish, specific arrival signs
A scarlet badis that arrives tucked against its plant cover, barring visible when it turns, has travelled as calmly as this species manages. Tell the specialist if yours arrives grey and motionless on the container floor, breathing fast with fins clamped flat, or with torn fin edges that suggest it travelled with a companion it fought, and say whether it had eaten in the days before the visit, because appetite history matters greatly for a picky live-food hunter. Back home, float the little container briefly, open it among the tank's plants, and let the badis slip out into cover without a pour or a shake. Watch at dusk for it to resume its slow, hovering hunt through the thicket. Recording the favourite thicket, the solo-travel rule and that hunting return in KinsLe via Care Pass keeps this badis's journeys as solitary and sheltered as it needs them.