Description
Guarded by the Tank’s Silent Cleanup Crew
This Otocinclus Catfish Warning Sign is made for aquarists who know that the smallest fish often does the most work. Known for clinging to glass and quietly grazing algae, the otocinclus brings subtle personality to planted tanks, nano aquariums, and aquascapes. Designed in a bold warning-style layout, this aluminum metal sign adds humor to your aquarium space while keeping that classic novelty security look.
Whether displayed near your planted tank, mounted above an aquarium stand, or placed in your fish room, this durable metal sign makes a thoughtful gift for aquascapers and freshwater hobbyists. It celebrates the unsung heroes of algae control in a clean, high-contrast design built to last.
ABOUT THIS METAL SIGN
• Premium aluminum metal construction
• UV-protected finish to resist fading
• Rustproof and weather-resistant for indoor or covered outdoor use
• Available in Clean (modern) or Distressed (vintage-style) finish
• 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 planted tanks, aquascaping spaces, nano setups, and freshwater hobby rooms.
PERFECT FOR
• Planted tanks and aquascapes
• Nano aquarium setups
• Freshwater fish rooms and hobby corners
• Aquarist gifts and algae-control enthusiasts
• Unique aquarium wall decor
FREQUENTLY ASKED QUESTIONS
Is this sign safe for humid aquarium rooms?
Yes. The rustproof aluminum and UV-protective coating make it suitable for fish rooms and tank areas.
Does it come with mounting holes?
Rectangular versions include pre-drilled holes. Square options are available without holes.
What finish options are available?
Choose between a clean, modern finish or a distressed vintage-style look.
Is this a good gift for planted tank hobbyists?
Absolutely. It’s a fun and thoughtful gift for aquascapers, nano tank keepers, and freshwater aquarium fans.
COMPLETE YOUR AQUARIUM WARNING SIGN COLLECTION
Pair this freshwater-inspired design with other cleanup crew favorites like the Amano Shrimp Aquarium Metal Sign, Nerite Snail Aquarium Metal Sign, or Plecostomus Guard Sign to create a cohesive planted tank display. Explore the full Tanks and Exotics collection to find the perfect metal sign for your 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.
You may also like
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.







