A Guide to Buying Saltwater Fish | How to Select Healthy Specimens and Welcome Them Home | ブリちょく
Marine Fish| ✍️ BreederDirect Editorial
A Guide to Buying Saltwater Fish | How to Select Healthy Specimens and Welcome Them Home
A guide for selecting saltwater fish when purchasing online. Detailed explanations covering health check points, hardy species for shipping, acclimation methods, and compatibility checks for mixed tanks.
Key Takeaways
A guide for selecting saltwater fish when purchasing online. Detailed explanations covering health check points, hardy species for shipping, acclimation methods, and compatibility checks for mixed tanks.
Saltwater fish are more sensitive to environmental changes compared to freshwater fish, and the way you select them at purchase and the procedures you follow when bringing them home greatly impact the success of raising them. This guide brings together practical points for identifying healthy specimens and safely welcoming them to your home. Please be sure to read through this before purchasing saltwater fish on Br-choku.
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The BreederDirect editorial team specializes in care information for animals, covering veterinary care and breeding to deliver beginner-friendly guides.
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Before purchasing saltwater fish, thoroughly research the basic information about the species you wish to raise. Confirm in advance the maximum size, required tank size, diet (omnivorous, herbivorous, carnivorous), temperament (docile, aggressive), compatibility for mixed tanks, and care difficulty level. Particular attention should be paid to maximum size, as some species that are small juveniles at sale will grow to over 30 cm when mature (such as Napoleon wrasse and large angelfish). Be sure to verify whether you can provide lifelong care in your home aquarium size.
Additionally, begin setting up your tank at least 4-6 weeks before introducing livestock, and confirm with a test kit that both ammonia and nitrite are zero before considering your purchase.
Health Check Points
The health of saltwater fish can be assessed from the following points:
No white spots on the body or abnormal mucous membranes: It's important not to overlook early signs of conditions like white spot disease or trichodina
Fins are intact: Torn or deteriorating fins are signs of bacterial infection
Eyes are clear: Fish with cloudy or whitish eyes may be stressed or ill
Breathing is calm: If gill movement is abnormally rapid, it may indicate parasites or poor water quality
The fish is eating: Be sure to ask the breeder what type and quantity of food it consumes
Body color is vibrant: Fish experiencing stress may fade in color or become darker
Swimming behavior is normal: Be cautious of fish gasping at the water's surface or remaining motionless at the bottom
Avoid newly arrived specimens: Select fish that have been stable for at least one week or more after arrival at the breeder or shop
For online purchases, check the fish's condition immediately upon arrival. If anything is abnormal, take photos and contact the breeder.
Hardy Species for Shipping
When considering an online purchase, selecting species with high tolerance to shipping reduces the risk of failure.
Clownfish: Hardy with strong resistance to shipping stress, recommended for beginners
Gobies: Many small and hardy species such as jawfish and other goby varieties
Damselfish: The Azure Damselfish combines the beauty of schooling behavior with hardiness
Basslets: Species like the Royal Gramma are beautiful and relatively tolerant of environmental changes
On the other hand, some butterfly fish and surgeonfish species tend to be sensitive to shipping stress. For your first online purchase, it's safest to start with hardy species.
Acclimation Method
Acclimating saltwater fish requires even greater care than with freshwater fish.
Temperature acclimation: Float the bag in the tank for 30 minutes to 1 hour to equalize temperatures
Prepare for drip acclimation: Using an air tube and valve, slowly drip tank water into the bag
Drip rate: Continue at a pace of 2-3 drops per second until the bag's water volume doubles (approximately 1-2 hours)
Transfer: Do not pour the bag water into the tank; use a net to scoop only the fish and transfer it to the tank
Important note: The water in the bag may contain dissolved ammonia. Pouring it into the tank can worsen water quality, so always keep the bag water and tank water separate.
The Importance of Quarantine
When introducing a new fish to an established tank, quarantine (treatment) is essential.
Prepare a quarantine tank: A simple 10-30 liter tank is sufficient
Quarantine period is 2-4 weeks: Consider the incubation period for conditions like white spot disease and lymphocystis
Observation items: Check body surface changes, appetite, and breathing condition daily
Copper ion treatment: Perform preventive treatment with copper ion medication if necessary (not suitable for coral tanks)
Skipping quarantine and introducing fish directly to the main tank risks spreading disease to existing fish. Even though it's inconvenient, always perform quarantine.
Confirming Compatibility for Mixed Tanks
Saltwater fish have strong territorial instincts depending on the species, making it important to confirm compatibility in advance.
Be cautious with same species or closely related species: Angelfish and clownfish fight fiercely with their own kind
Consider size differences: Mixing large and small fish carries the risk of predation
Plan introduction order strategically: The basic approach is to introduce docile species first, followed by more aggressive species
Compatibility with corals: Some butterfly fish and angelfish feed on corals, so caution is needed
Before purchasing, inform the breeder of your current fish composition and get advice on compatibility for peace of mind.
Important Points When Purchasing Online
When purchasing through online platforms like Br-choku, since you cannot see the fish in person, confirming photos and descriptions is especially important. Review photos taken from multiple angles, and ask the breeder about any unclear points via messaging. Confirm in advance whether DOA (dead on arrival) protection is offered, the packing method (oxygen provision and heat packs), and the shipping time from dispatch to arrival. Upon arrival, unpack promptly, check the condition, and take photos—this ensures smooth handling if any problems arise.
Benefits of Purchasing on Br-choku
On Br-choku, you can purchase directly from breeders who specialize in breeding saltwater fish. You can confirm the breeder's rearing environment and the food they provide in advance, and you can easily discuss husbandry questions after bringing your fish home through the messaging feature. With secure escrow payment and transparent display of each breeder's reviews and transaction history, even your first saltwater fish purchase becomes a trustworthy experience.
