# One-piece Fish Corner (Kotnik) Hagen model 03758 - aquarium accessory

**URL:** https://aio.lv/en/product--hagen-03758--12025873
**Data updated:** 2026-03-12 16:33 (EET)
**Category:** Aquarium Supplies
**Manufacturer:** Hagen
**Manufacturer code:** 03758
**EAN:** 015561109338
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 6.99 €
**Prices and availability valid until:** 2026-07-24 23:59
**Price without VAT (21%):** 5.78 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--hagen-03758--12025873

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

One-piece fish corner (Kotnik) by Hagen, model 03758, is an aquarium accessory designed to fit tank corners and provide shelter or structure for fish. This compact, single-piece component is suitable for creating hiding spots, territorial boundaries, or decorative arrangements in freshwater tanks. Ideal for aquascaping, breeding setups, and improving habitat complexity for small to medium fish species.

## Long description

One-piece Fish Corner (Kotnik) Hagen model 03758 is a compact aquarium accessory designed to fit into the corner of freshwater tanks. The single-piece corner element provides a sheltered area that can serve as a hiding place, territorial boundary or structural detail in planted and hardscape layouts. Its small footprint lets it integrate into breeding setups, community tanks and aquascapes where space and unobtrusive shelter are required.
Advantages
The one-piece construction ensures easy placement and stable positioning in tank corners without additional assembly. Its shape creates a realistic sheltered cavity that reduces stress for shy or territorial fish while increasing habitat complexity. The accessory is suitable for freshwater environments and is compatible with typical aquascaping materials and decorations.
Suitable for
 Providing hiding spots for small to medium freshwater fish
 Establishing territorial boundaries in community tanks
 Supporting breeding and fry protection setups
 Adding structural detail in planted aquascapes
Key specifications
 Single-piece corner design for tank edge placement
 Compact dimensions suitable for small to medium aquariums
 Intended for freshwater use
 Neutral appearance to blend with rocks, plants and substrate
How to use
Place the fish corner into a clean aquarium corner and position it against the glass or between existing hardscape elements. Rinse the piece under running water before first use to remove manufacturing residues. Arrange plants, rocks or substrate around the corner to integrate it into the layout and create entry points that suit the behaviour of the resident fish. Check stability after placement to prevent accidental shifting during maintenance or fish activity.
Usage recommendations
For best results, use the corner in combination with natural materials such as smooth rocks, driftwood and live plants to provide additional cover and visual continuity. Regularly inspect the piece for algae or debris and clean gently with water and a soft brush as needed; avoid strong detergents or chemicals.

## FAQ

### How much does the Hagen 03758 one-piece fish corner cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Hagen products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Hagen service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12025873/67513962_large.webp