The fish photo is one of fishing's oldest rituals — a record of a moment, a mark of respect for a remarkable creature. Done well, it produces images that last a lifetime and demonstrate the kind of care that defines a thoughtful angler. Done carelessly, it can leave a fish so compromised that it dies hours after release, unseen. The gap between those two outcomes is mostly technique, and technique is learnable.
This guide covers everything from how to hold a 20kg Mekong giant catfish without injuring it, to how to get decent light in Thailand's relentless midday sun on a phone camera.
The Biology You Need to Understand
Before we talk cameras, a word about what you are actually holding. Fish are surrounded by a layer of mucus — the slime coat — that performs several critical functions. It protects against bacterial and fungal infection, helps regulate osmosis in water, and reduces drag while swimming. When it is stripped by dry hands, rough surfaces, or prolonged air exposure, the fish loses its primary immune defence. Infections that develop in damaged slime coat can kill a fish days after release, well out of sight.
At the same time, fish removed from water experience stress that causes a cascade of physiological responses: elevated cortisol, lactic acid build-up in muscles, and interrupted oxygen exchange. For most healthy fish, brief air exposure is survivable and non-damaging. Repeated or prolonged exposure is not.
The rules that follow are built around these two realities.
Wet Hands, Always
This is the single most important rule and the one most commonly ignored at the moment of excitement. Before your hands touch the fish, wet them — fully, both palms, both sets of fingers. Do this before you lift the fish, not after. On a hot Thai day, your dry hands can strip slime from a fish's flank in the time it takes to adjust your grip.
If you are fishing from a boat with a livewell, have water ready. If you are bank fishing, take a step into the shallows before handling. If you are on a hot fiberglass deck at a pay lake, know that the deck itself is a problem — wet it too.
A single dry-hand grip on a large fish can remove enough slime coating from a patch of skin to cause a serious post-release infection. Wet your hands before every touch, every time.
Supporting Large Fish Correctly
The jaw-hold — one hand under the lower jaw, fish hanging vertically for the camera — is acceptable for smaller fish of a few hundred grams. It becomes a genuine injury risk for fish above roughly 2kg. The weight of the body pulling down on the jaw joint can dislocate it, and the compression of internal organs in an unsupported vertical position can cause damage that is invisible to the angler but fatal to the fish.
For any substantial fish — a giant snakehead, a large Chao Phraya catfish, a hefty mangrove jack — hold the fish horizontally. One hand under the jaw or pectoral area, one hand supporting the belly or tail. The fish should be roughly parallel to the water. This is not just ethical; it also makes for better photos, because you can angle the fish toward the camera without its tail hanging limply out of frame.
For very large fish — trophy Mekong giants at Bungsamran Lake or big grouper from reef sessions — consider keeping the fish in the water for at least part of the shot. A half-in, half-out image of a large fish held low over the surface is increasingly recognised as the mark of an experienced angler, and the fish will thank you for it.
Managing Air Time
Have your shot ready before the fish leaves the water. This sounds obvious; it is repeatedly ignored. Work out your framing, check that the sun is behind the photographer, make sure the other person knows which way to face. Then lift, shoot, return.
A benchmark many experienced catch-and-release anglers use: one second of air time per centimetre of fish length. A 60cm fish gets about a minute maximum across the entire handling sequence — not per photo attempt. In Thailand's heat, where a fiberglass deck can exceed 45°C and air humidity is high enough to dry a fish's exposed gills in seconds, err significantly shorter than the benchmark.
Set up the shot before the fish leaves the water. The moment of lift should be the last thing that happens — not the first.
If you need multiple shots — different angles, a video clip, a burst — return the fish to water between attempts. Let it recover for at least as long as it was out of the water before lifting again.
Deck and Surface Hazards
Coarse non-slip matting, dry fiberglass, timber decking, gravel banks, and concrete surrounds are all hard on fish. Even the most careful horizontal hold becomes damaging if you have to set the fish down on a rough surface for a moment. Wet the surface before the fish touches it. Rubber-coated unhooking mats, widely used in European carp fishing, are excellent — consider packing one if you are doing serious catch-and-release work. A wet towel laid on a deck works as a reasonable substitute.
Thailand's tropical sun means metal cleats, tackle boxes left in the sun, and unprepared fiberglass are hot enough to cause immediate skin burns on a fish. In an extended session at a pay lake during the hot season, your working surface can be genuinely scalding. Splash water on your entire work area before you bring fish aboard.
This connects directly to our broader catch and release guidance for Thailand — surface management is one of the most underrated elements of ethical fish handling.
Lighting for Fish Photography
Thailand offers extraordinary golden-hour light in the early morning and late afternoon — use it. Midday sun produces harsh shadows that fall across the angler's face and make fish colours look washed out and flat.
Golden rules for outdoor fish photography:
- Sun behind the photographer, or to one side, not behind the fish.
- If you are forced to shoot in midday sun, have your subject turn slightly so the sun comes from the side rather than over-the-shoulder (which creates a shadow from the angler's arm falling across the fish).
- Overcast conditions are actually excellent for fish photography — soft, even light, no harsh shadows, colours render faithfully.
- For dawn and dusk sessions, use your phone's portrait mode or your DSLR's wider aperture to separate the fish from the dark background.
The wet fish surface is itself reflective. In bright sun, the specular highlights on a wet fish flank can blow out entirely, losing scale detail. If you notice this in the preview, shade the fish slightly with your body or a hat before shooting.
Phone vs DSLR: The Practical Answer
For most anglers, a modern flagship phone outperforms a DSLR they are not comfortable using in the field. The computation photography in current-generation phones handles difficult lighting conditions — high contrast, mixed light, backlit subjects — better than manual camera settings under time pressure. The real weakness of phones is in very low light and in fast-moving subjects, where a DSLR with a decent 24-70mm or 24-105mm zoom genuinely wins.
If you are using a phone:
- Clean the lens — after a day on a Thai boat, saltwater spray and sunscreen leave a haze that destroys image quality.
- Use the standard camera, not the ultra-wide lens, for fish portraits — ultra-wide distorts faces and fish at close range.
- Tap to focus on the fish's eye, then lock exposure on the fish rather than the sky.
- Use burst mode for the release shot — catching the water spray as the fish re-enters is worth capturing.
If you are taking photography seriously, a mirrorless camera in an underwater housing or a weather-sealed DSLR body with a polarising filter gives you options that no phone currently matches for in-water shots and wide landscape-with-angler compositions.
Underwater and Release Shots
Some of the most compelling fish photography happens underwater or at the moment of release. A small waterproof action camera or a phone in a waterproof housing can capture remarkable images of fish being returned — especially in clear water at locations like Gillhams Fishing Resort or offshore over coral structure.
For release shots, position yourself downstream of the fish so it faces into the current. Hold it gently until it rights itself and kicks away on its own. The moment it surges back into the water — fish fully extended, water erupting — makes a better photograph than the posed hold anyway.
Common Mistakes to Avoid
- Squeezing the fish for grip. Lateral compression of internal organs. Hold firmly but not hard.
- Fingers in the gills. Gill tissue is extremely delicate. Never insert fingers inside the gill plate.
- Fishing a fish up a bank to a dry spot. The dragging damages the slime coat and scales before you even pick it up.
- Taking the fish too far from the water for "a better background." Every step away is a step that extends air time and removes the safety net if the fish slips.
- Celebrating for the camera while still holding the fish. Fist pumps, phone calls, and conversations with the guide all happen after the fish is back in the water.
Responsible fish photography is not about making catch-and-release look complicated — it is about being ready, being efficient, and respecting a creature that cooperated with you for a few moments before going back to its world. The images produced by anglers who handle fish well look better, tell a better story, and reflect better on the sport. Read more about the ethics underpinning this in our Responsible Anglers Code for Thailand.
