Tropical Fish Photography Guide — Capturing Beautiful Shots

Many hobbyists want to capture their beautiful tropical fish on camera or share their tanks on social media. However, photographing through aquarium glass presents unique challenges, including reflections, moving subjects, and color-shifted lighting. This article covers tropical fish photography techniques in detail, from smartphones to DSLRs.

Combating Glass Reflections

Reflections on glass are the biggest enemy of aquarium photography. Room lights and the photographer's own reflection can ruin an otherwise beautiful aquascape.

• Turn off room lights: Keeping only the tank light on while darkening the room is the most effective approach. Ceiling light reflections are dramatically reduced
• Press the lens against the glass: Placing the camera lens or smartphone flush against the glass eliminates most reflections
• Use a polarizing filter: For DSLRs and mirrorless cameras, a CPL (circular polarizing) filter significantly cuts reflections. Rotate the filter to find the angle with minimal reflection
• Use black cloth or boards: Placing black fabric or a board behind the photographer reduces reflections. Wearing black clothing helps even more
• Shoot straight-on: Shooting perpendicular to the glass is the standard approach. Angled shots increase reflections and glass distortion

Also pay attention to the glass itself. Before shooting, wipe the exterior with a soft cloth and clean interior algae with a scraper for crystal-clear transparency.

Shutter Speed and Exposure Settings

Since tropical fish are constantly moving, proper shutter speed settings are crucial for sharp, blur-free photos.

• Recommended shutter speed: At minimum 1/125 sec, ideally 1/250 sec or faster. Fast-swimming fish (danios, rasboras, etc.) may require 1/500 sec or above
• ISO adjustment: Aquariums are surprisingly dim despite lighting. Raising ISO to 800-3200 enables faster shutter speeds. However, excessive ISO increases noise, so test your camera's limits
• Aperture (f-number): Open settings around f/2.8-f/5.6 gather more light. Stopping down too much darkens the image and limits shutter speed
• Use Manual mode: Large brightness differences within tanks cause auto exposure to be inconsistent. Use Manual (M) or Shutter Priority (S/Tv) mode for control
• Use burst mode: Continuous shooting is essential for capturing fleeting expressions or fully spread fins. Take dozens of shots and select the best one

On smartphones, Pro or Manual mode allows adjustment of shutter speed and ISO. Otherwise, ensure bright lighting, then tap to set focus and exposure.

Lighting Techniques for Vibrant Colors

Lighting significantly affects how fish colors appear. Thoughtful lighting brings out their natural beauty.

• Tank light color temperature: White light at 6,500K-8,000K produces natural-looking colors. RGB grow lights emphasize reds and blues, so consider switching to white mode for photography
• Supplemental lighting: If the tank light alone is insufficient, add an LED desk lamp from above. Match its color temperature to the tank light to avoid color casts
• White balance adjustment: Set white balance manually to match your tank lighting rather than using auto. RAW capture allows free adjustment in post-processing
• Light direction: Top-only lighting darkens the lower half of fish. White substrate or bright backgrounds reflect light and soften shadows
• Never use flash: Flash reflects off aquarium glass, creating a bright white blob. Strong light also stresses fish

Check color accuracy on your camera's LCD immediately after shooting and fine-tune white balance as needed. RAW shooting provides extensive color adjustment flexibility in post-processing.

Macro Photography for Fine Details

Macro photography reveals the shimmer of scales, delicate fin patterns, and facial expressions that go unnoticed by the naked eye.

• Macro lens selection: For DSLRs and mirrorless cameras, a macro lens around 100mm is ideal for aquarium photography. The longer working distance allows you to photograph fish at large magnification even from a distance
• Smartphone macro lenses: Clip-on macro lenses enable macro photography with smartphones, available for as little as a few hundred yen
• Depth of field challenges: In macro photography, the in-focus area (depth of field) becomes extremely shallow. The standard practice is to focus on the eye, with other areas falling out of focus
• Focusing tips: Target moments when fish pause briefly (feeding, resting behind driftwood). "Pre-focusing" (setting focus at a spot and waiting for the fish to swim into position) is effective
• Tripod use: Even slight camera shake is noticeable in macro photography. Use a tripod to stabilize the camera and a remote shutter or timer to eliminate vibration

When photographing small fish at high magnification, glass thickness causes light refraction that affects image quality. Aim the lens as perpendicular to the glass as possible to minimize refraction.

Background and Composition

Simple adjustments to background and composition can dramatically improve photo quality.

• Clean backgrounds: Applying a background sheet (black, white, or blue are standard) to the back of the tank hides walls and wiring behind the aquarium. Temporarily placing black construction paper works well too
• Rule of thirds: Divide the frame into a 3x3 grid and place the fish at intersection points. This creates more dynamic photos than centering the subject
• Use negative space: Leave open space in the direction the fish is swimming for a natural, dynamic composition
• Combine with plants: Including blurred aquatic plants in the foreground adds depth and atmosphere. The green of plants also complements fish colors
• Variety of full and close shots: Capture both full tank landscapes and individual fish close-ups for a diverse collection of images

Post-Processing and Sharing

Post-production editing further enhances your results.

• RAW processing basics: Adjust white balance, exposure, contrast, and saturation. Adobe Lightroom and Darktable are popular processing tools
• Cropping: Remove unnecessary elements and refine composition. Trim away any tank frame (black border) that appears in the shot
• Sharpness adjustment: Moderate sharpening enhances scale and fin detail. Over-sharpening amplifies noise, so exercise restraint
• Noise reduction: High-ISO photos have visible noise. Use noise reduction tools, but excessive application loses fine detail
• Social media tips: Square or 4:5 vertical formats display best on Instagram and X. Adjust format in an app before posting

Find Photogenic Fish on BriChoku

For stunning photos, start with healthy, vibrantly colored fish. On BriChoku, you can purchase tropical fish directly from trusted breeders and discuss individual coloring and patterns in detail. Fish carefully raised by breeders make exceptional photographic subjects. Find that perfect specimen on BriChoku.