Description
Freshwater Attitude with Sharp Boundaries
This Piranha Aquarium Metal Guard Sign brings bold personality to freshwater tanks, fish rooms, and hobby spaces. Inspired by one of the most recognizable predator fish, this aluminum metal sign blends vintage warning style with unmistakable edge. Small, intense, and confident, the piranha delivers a novelty security look that fits perfectly in aquarium setups with attitude.
Whether mounted above an aquarium stand, displayed in a man cave, or added to your hobby room wall, this durable metal sign makes a unique gift for aquarists and predator fish fans. It combines dramatic freshwater energy with long-lasting, weather-resistant construction.
ABOUT THIS METAL SIGN
• Premium aluminum metal construction
• UV-protected finish to resist fading
• Rustproof and weather-resistant for indoor or covered outdoor use
• Distressed vintage WARNING design with bold, high-contrast text
• Rectangular format includes pre-drilled mounting holes
• Square options available without holes
• Rectangular sizes: 9x12, 12x18, 16x24 inches
• Square sizes: 6x6, 8x8, 12x12 inches
• Made to order in Henniker, New Hampshire, USA
Built for freshwater aquariums, hobby rooms, man caves, and tank setups with personality.
PERFECT FOR
• Freshwater aquarium setups
• Fish room decor and aquarium stands
• Predator fish enthusiasts
• Man caves and hobby spaces
• Unique aquarist gifts
FREQUENTLY ASKED QUESTIONS
Is this metal sign safe for humid aquarium environments?
Yes. The rustproof aluminum and UV-protective coating make it suitable for fish rooms and tank areas.
Does the sign include mounting holes?
Rectangular versions include pre-drilled holes for easy installation. Square versions are available without holes.
Can this sign be displayed outdoors?
Yes. The aluminum construction and protective finish make it weather-resistant for covered outdoor spaces.
Is this a good gift for aquarium hobbyists?
Absolutely. It makes a fun and bold gift for freshwater fish keepers and predator fish fans.
COMPLETE YOUR AQUARIUM GUARD SIGN COLLECTION
Pair this freshwater predator design with other bold favorites like the Barracuda Metal Warning Sign, Goby Fish Aquarium Metal Sign, or Giant Isopod Deep Sea Metal Sign to create a cohesive aquatic display. Explore the full Tanks and Exotics collection to find the perfect metal sign for your fish room or aquarium setup.
Designed and made in the USA by Designs by Linda Nee
© Designs by Linda Nee LLC
Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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Products & Quality
Our metal signs are made from durable aluminum, designed to be lightweight, vibrant, and long-lasting.
Our art prints are available either on aluminum metal or on archival-quality art paper, depending on the product you choose.
Our greeting cards are professionally printed on premium Red River linen textured cardstock, giving them a beautiful, high-quality feel.
For other items such as gifts and accessories, we use carefully selected materials designed for both beauty and everyday durability. Product pages include specific details about each item.
Yes, our aluminum metal signs are durable and suitable for outdoor use, as aluminum is rust-resistant and made to handle different weather conditions.
Products like tumblers, compact mirrors, necklaces, and keychains are made from durable materials designed for everyday use.
However, art prints on archival paper and greeting cards are intended for indoor use to preserve their quality and appearance.
Our products are designed to be both beautiful and easy to care for.
Metal signs and metal art prints can be displayed indoors or outdoors and can be gently cleaned with a soft cloth if needed. Our metal signs (9×12, 12×18, 16×24, 3×12, 6×24, and 4×18) come with pre-drilled holes for easy hanging. Metal art prints include Command™ strips for simple, damage-free wall mounting.
Art prints on archival paper are best displayed indoors and ideally framed to help protect them over time.
Items such as tumblers, compact mirrors, necklaces, keychains, mousepads, coasters, and Christmas ornaments are designed for everyday use and can be gently cleaned with a soft cloth. For best results, we recommend hand washing tumblers rather than using a dishwasher to help preserve the design and finish.
Shipping & Returns
We typically process and ship orders within 1–2 business days. Once your order is shipped, delivery time depends on the shipping carrier and your location within the United States.
We ship Monday through Friday (business days only). During busy seasons such as holidays, processing and delivery times may take slightly longer due to higher shipping volumes.
If you need your order by a specific date, please contact us through our Contact Us page before placing your order so we can check available expedited shipping options.
Yes! We offer free shipping on all U.S. orders over $50, including Alaska and Hawaii.
For orders under $50, we offer a flat rate shipping of $5.95 anywhere in the United States.
Free and flat rate shipping do not apply to APO/FPO or international orders, where shipping rates are calculated at checkout.
We accept returns or exchanges within 30 days of delivery for non-personalized items.
Items must be unused and in their original packaging, and refunds are issued after we receive and inspect the return. Please note that return shipping costs are the customer’s responsibility, and original shipping fees are non-refundable.
Because many of our products are made just for you, custom or personalized items cannot be returned or exchanged unless they arrive damaged or defective.
Custom Orders & Personalization
Yes! Many of our products offer personalization options, such as adding a name, custom text, or special details depending on the item.
If a product can be personalized, you’ll see a personalization field on the product page where you can enter your custom details before adding the item to your cart.
If you would like custom text on a design that doesn’t offer personalization, or if you have your own design you’d like us to print, please contact us and we’ll do our best to help.
Yes! We’re happy to work with businesses, organizations, and events that need bulk orders.
If you’re interested in ordering multiple items, custom designs, or branded products, please contact us with the details of your request and we’ll be glad to discuss the options.
Still have questions?
If you didn’t find the answer you were looking for, feel free to reach out. We’re always happy to help with product details, customization requests, or order questions.
Contact us and we’ll get back to you as soon as possible.







