| The Northern Pike . |
| Esox lucius. |
| The Common Bleak . |
| Alburnus alburnus. |
| The Common Roach . |
| Rutilus rutilus. |
| The Great Crested Grebe . |
| Podiceps cristatus. |
| Michel # 4104; Scott # 3720d; | |||||||||
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| Color: multicolored | |||||||||
| Date of Issue: 31.03.2004 | |||||||||
| Face Value: 1.25 Zl | |||||||||
| Designer: J.Brodowski | |||||||||
| Stamp Size: 43 × 31 mm. | |||||||||
| Stamp Quantity: 1 625 000 | |||||||||
| Perforation: 11½ | |||||||||
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