The spine problem decides the container
Most small fish travel in bags; the bronze corydoras is the exception that proves why species details matter. Its pectoral fins carry stiff, sharp spines, and a frightened corydoras locking those spines can puncture a standard fish bag, slowly leaking its water away in the car, or wedge itself painfully into a net's mesh during capture. A smooth rigid container with a secure lid removes both risks at once. The whole group goes into it together, because corydoras are deeply social bottom-dwellers that pile companionably on top of each other, and that familiar contact measurably calms them compared with solitary confinement.
Catching a fish that locks its fins
Work the catch to the corydoras's defences. Drain the tank down after removing decor, then sink the transport container itself and shepherd each fish into it with a soft net used as a moving wall, never as a lifting scoop. If a cory does catch in mesh, do not pull; lower the net back into water and let the fish free itself, or ease the mesh away with wet fingers supporting its body. Fill the container with the corys' own tank water, add nothing hard or abrasive for them to be thrown against, and skip feeding from the day before so the shared water stays cleaner on the road.
Air-gulping travellers need headspace
Bronze corydoras supplement their gills by darting up to gulp surface air, and on the road that behaviour is your friend and your gauge. Leave generous headspace under the lid so those gulps are available, and do not tape the lid airtight for a long drive; a short stop to lift the lid in a quiet, shaded car refreshes the air without meaningfully disturbing them. Keep the container level, dark under a towel, and wedged so it cannot slide, riding in the cabin where temperature stays near the tank's. Occasional calm gulping is normal; constant frantic trips to the surface mean the water needs attention at the next stop.
Release onto sand, not onto gravel edges
Have the destination tank filled and running with saved filter media before the container is opened, and ideally with its sand substrate already settled, because releasing bottom-dwellers into a cloudy, bare-bottom tank prolongs their stress. Float the sealed container to equalise temperature, then swap in tank water in small additions. Lower the corydoras in by tipping the container gently at the bottom rather than pouring from a height, and keep the lights off while the group finds each other, shuffles into a resting pile, and begins the whiskery substrate-tasting that signals a cory feeling at home.
Settling signs along the barbels
Check barbels in the days after the move: they should be full-length and actively working the sand, while shortened or reddened barbels after transport point to abrasion or water trouble worth testing for promptly. Confirm the whole group is accounted for and feeding on sinking food placed where they rest, because one cory that stays hidden and refuses the floor buffet after a move deserves isolation and a closer look rather than assumption. Write down how many travelled, how they rode, and when normal shuffling resumed. Those notes sit naturally in KinsLe's Pet Passport, where this bronze corydoras's records stay together as one packet ready for any future journey or handoff.